I'm an American, I also work with statistics regularly. It is impossible to make any rational conclusion from the data in the infographic alone as it excludes so many lurking variables. It doesn't mention how many of those events involved deadly weapons, or were attacks initiated by the victims, leaves out how many involved unarmed victims despite the fact that the author clearly had that data available, and cherry-picks convient examples. For example, maybe Orlando has more shootouts involving police because of local cartels or gangs but overall lower violent crimes than Buffalo, and maybe Buffalo's violent crime is mostly home invasions or robberies where the perpatrator leaves before police show up. Theres no way of knowing based on this data alone and lurking variables like that are what make comparing violent crime statistics at face value meaningless. You should not have to be a statistician to realize that the way in which the data is presented in this infographic makes it utterly impossible to draw any meaningful conclusions about police violence.

To be clear: I'm not suggesting there isn't a problem, nor am I defending police, I'm just addressing the data presented in this infographic alone.