Since you're asking for it, here's a dump of the most offensive black jokes I've heard that haven't been posted.
They were considering putting Harriet Tubman on the $20 bill. They should have put her on the $1 bill instead so that black people would actually see her.
Why does a gorilla always have a frown?
Because in 10 million years he'll be black.
How does a black chick find out she's pregnant?
She wakes up and her boyfriend is missing.
Why couldn't Stevie Wonder drive a bus?
There's no steering wheel in the back.
Why do police dogs lick their assholes?
To get the taste of black men out of their mouth.
MLK day is cool. What better way to remember a black man than by not going to school or working?
What's the difference between an Ethiopian child and my phone's battery?
I care when my battery dies.
How many blacks does it take to start a riot?
-1
What's the difference between HIV and a black man?
HIV hangs around after the child is born.
A black guy and a white girl meet at a bar. They go back to her place to hook up. She starts taking his clothes off and tells him: "now show me what you guys are famous for."
So he beats her up and steals her TV.
A black woman has 5 children who all look alike. She names each of them Tyrone. How does she tell them apart?
Their last names.
Why don't black people go on cruises?
They're not falling for that one again.
What do black people and bicycles have in common?
They both stop working when you take the chains off.
What's the difference between a black man and a bicycle?
When you chain up your bike it doesn't start singing.
Why are there only two coffin handlers at a Black funeral?
There are only two handles on a trash can.
What do you call a black hitchhiker?
Stranded.
Why do black people have nightmares?
Because we killed the only one that had a dream.