There are incomplete lists on wikipedia, broken down by month and year. Here's January 2015. Let's take a cursory look at a few of them.
1) Police reported that he ran, fell, and a gun he was carrying discharged through the window of the clinic. Marshall reportedly tried to clear the gun while on the ground, at which point all six officers fired, killing him.
Possibly justified, at least he was armed.
2) The shooting occurred when officers responded to a domestic disturbance and James, with a blood alcohol content of 0.28, fired at officers and wounded at least one.
Justified.
3) Police responded to a domestic disturbance and Wendell King was shot and killed after he fired a weapon and hit a police officer.
Justified.
4) Police, alerted to a fire occurrence, responded and found a body then chased decedent, a person of interest, who was shot and killed by the police during the chase.
Sounds like garbage. Probably didn't want him to get away and decided to gun him down.
5) "The car eventually stopped in front of Traylor Stadium. There was a confrontation. Our officers opened fire and the suspect was shot and killed on the scene."
Suspect didn't fire any shots, rookie officers. Sounds unnecessary.
6) A twenty-five (or 26)-year-old man was shot inside a car after exiting a motel and "began ramming the occupied police vehicle" with the his (stolen) vehicle. He was pronounced dead at the scene.
You're not going to build up any speed in a parking lot and you're not going to kill the cops in their vehicle by ramming it. Unnecessary.
7) Terry, wielding several knives, lunged at an officer on her front porch and then threw another knife at the officer before being shot multiple times. Terry later died on January 29, 2015, at Nebraska Medical Center.
Wielding several knives? Not just two? You should be able to stop someone with a pair of knives without killing them. Yes, you might get cut but you're not going to end up dead. Pointless to murder someone in this situation.
8) Police responded to a family disturbance. Nuu struck a police dog with a hammer and reportedly moved to strike the K9 handler when police opened fire. Nuu died in hospital.
I love dogs, but I also love humans. You should not murder a human to possibly prevent a dog from being killed.
9) Police responded to a family disturbance. Nuu struck a police dog with a hammer and reportedly moved to strike the K9 handler when police opened fire. Nuu died in hospital.
Justified.
10) Hernandez, a minor, was shot after reportedly striking an officer with a stolen vehicle. However, witnesses in the vehicle stated that the officer was struck after Hernandez was incapacitated and lost control of the vehicle.
Bullshit. Murder by police.
11) After committing an armed robbery, Myler exchanged shots with local police and was killed.
Justified.
12) Coignard, a minor with a history of mental illness, walked into a police station lobby and used a lobby phone to request assistance from a police officer. She had the words "I have a gun" written on her hand and threatened police with a knife. After a Taser apparently had no effect, she was shot four times in the trunk and extremities.
In the police station, surrounded by cops, and you can't tackle a crazy woman and get a knife away from her? Sure, you might get cut but it's better to get cut than murder someone.
13) Carr, unknowingly under police surveillance as part of an investigation into a credit card fraud ring, had his vehicle surrounded and blocked in by unmarked police cars. He rammed a police car and was shot by undercover police.
Bullshit.
14) While responding to a 911 hang-up call, police officers shot Guillory after he pointed a gun at them. Guillory was a combat veteran who had been a diagnosed with post traumatic stress disorder.
Maybe bullshit, maybe not. Hard to say without video.
16) Brandishing a knife and charging at a police officer, Ceja was shot multiple times by the officer. Ceja was drunk and was causing a disturbance at his home which prompted relatives to call police on him
Bullshit. Should have used non-lethal means or backed away from the charging man.
17) Sowell shot a police officer after attempting to escape on foot from a traffic stop. A police officer and an armed security guard returned fire, killing Sowell.
Justified.
18) Goebel was suspected of being involved in a stolen car ring and was wanted by several agencies. During a raid, he attempted to escape in a truck, striking an officer and a vehicle with the truck. He was pronounced dead after being air lifted to a hospital.
From the actual article, "Authorities said when police arrived, two men and a woman in a Ford F-350 when it burst out of a storage shed and drove towards the officers, pushing into one and knocking him down." You can't build up any speed coming out of a storage shed and the cop was simply "knocked down." Sounds completely unnecessary.
19) Golden was killed after police said that he failed to obey orders and that he drove his vehicle at an officer in an apartment building parking lot. Police had been called to the building on the 200 block of University Avenue E. on a report that Golden was making death threats via text message.
Bullshit.
20) Before 6:00 a.m., Schroeder attacked a family member (who was not seriously injured), threatened another, and injured himself with a large kitchen knife. He refused to drop the knife when ordered by the officer, and was shot instead.
Bullshit. No one is getting killed by that kitchen knife. Just taze/pepper spray/tackle him.
21) Okeefe, suspected of criminal activity and wearing body armor, was shot and killed after running from and shooting at police officers.
Justified.
22) Police responded to a woman's report that her boyfriend was armed and acting strangely. After surrounding the house, the officers told Hamby to come out. He then fired at the officers and was shot. He died two days later.
Probably justified.
23) Police officers, responding to a report of a domestic disturbance, shot and killed Smith after he confronted them with an assault rifle and a handgun.
Justified.
24) Simpson was shot and killed after attempting to run down two sheriff's deputies investigating a report of a stolen vehicle.
You can get out of the way of a car. Sounds like bullshit.
25) Howard was found inside a pharmacy after an alarm was triggered. During a brief struggle with the responding deputy, the deputy's weapon discharged and the bullet struck Artago Howard, who fled. Howard was found dead shortly after.
Reeks of bullshit.
26) Refusing to identify himself, Barker became agitated and struck the officer with a metal-bladed snow shovel, knocking him from a porch and to the ground. Barker continued to assault the officer, who then shot and killed Barker.
Maybe justified.
27) An officer responding to several 911 calls confronted Murphy at a motel. After a struggle, Murphy was arrested and later died while in police custody.
Pretty fucking suspicious.
28) Caffarello was shot and killed by his brother-in-law, an off duty police officer, during a domestic incident.
Off-duty, doesn't apply.
29) Brickman allegedly robbed a teller at gunpoint. He fled in his car, then stole an SUV at gunpoint. After hitting another vehicle, he attempted to escape on foot. When he pointed a gun at police officers, another officer shot and killed him.
Maybe justified.
30) When asked to show his hands, Sneed pointed a gun at his girlfriend and was shot and killed by the officers.
Probably justified.
31) Nichols asked to go to the bathroom and entered a dark room. After one of the deputies turned on a light, Nichols turned and pointed a handgun at the deputy. The deputy then shot Nichols, who was pronounced dead a short time later.
Probably justified.
32) Abdul-Rasheed was attempting to use a woman's identity to buy a plane ticket and was confronted by police. He then took out a knife and lunged at them. He was shot by one officer.
Sounds like bullshit. Run away from him if you don't want to get stabbed.
33) Sapp pointed what turned out to be an airsoft gun at officers as they were attempting to serve him with a warrant on a sexual assault charge.
Hard to say. May have been realistic looking.
34) A police officer identified as Jesse Hill accidentally shot Autumn Steele fatally in the chest. It is still under investigation how this happened
Bullshit.
35) Buck, a burglary suspect driving a stolen car, fired at pursuing police officers and was killed in the shootout.
Probably justified.
36) Responding to a report of a man with a gun, police confronted Rodriguez outside of a bar. Rodriguez refused to drop the weapon, instead raising it toward the officers. He was shot and killed.
Probably justified.
37) Hoffman drew a replica airsoft handgun from his waistband in the presence of responding officers, two of whom fired five times each, hitting Hoffman a total of three times. Police found an apologetic suicide note on Hoffman's cell phone.
Suicide by cop.
38) Kocher was struck by a vehicle while walking down a highway. Police were called, and the responding officer struck Kocher with his car, killing him.
Extremely bad luck.
40) After exiting the vehicle, he behaved belligerently and verbally threatened the officers. When he reportedly reached into his waistband he was Tasered, and then shot. He later died in the hospital. No weapon was recovered.
Sounds like complete bullshit. Killed for being hispanic and talking shit.
Killing people should be done only to prevent the death of another human. You do not need to kill people because they have kitchen knives. You do not need to kill people because they bumped into your car. You do not need to kill people to prevent them getting away.