A sorry situation, admittedly.
That being said, the victim was foolish.
Be wise as a serpent.
If you live in a big city you don't deliberately stroll past a mob of ANY race, especially when that mob is fighting and/or drinking. Chances are, they'd have beaten a person of any race who tried to intervene. If I see something like this in NYC, I remove myself immediately. If that's impossible, I hide. Only if attacked would I fight back. (Yes, I can do that.). Next step is call 911. As a female, I never identify myself. Just as on-line, I give a "case name" and that only if required. Depending upon your situation, you might choose to forgo 911 if it jeopardizes your safety.
Be gentle as a dove.
Someone(s) on CI has a serious hatred of Blacks. This is a mortal sin. No doubt there is a reason. Perhaps a Black person or persons seriously wronged this person or someone close to him. Still, even that doesn't justify hatred and mockery. You don't have to LIKE members of another race, but God does say you have to LOVE them. Read St. Paul's first letter to the Corinthian Catholics, chapter 13. Read it carefully. Charity has nothing to do with one's feelings.