There are people who actually believe he shot and killed 3 black men, in part because there were publications that reported it that way.

In reality:

He shot at 4

He hit 3

He killed 2

The 1 that was hit and didn't die was Gaige who testified for the defence prosecution but fucked up so well the prosecutor literally facepalmed in response at what was said.

The 1 who was shot at but wasn't hit was Jump kick man, who was black. He was repeatedly described as being unknown to the prosecution when in fact he was known because he'd offered to testify for the prosecution and when they learned he had a criminal record going back to when he was 18 [and therefore likely before that since anything prior to 18 would be sealed due to him being a minor] they wanted nothing to do with him.