apparently the hobo managed to snatch a gun from one of the cops during the struggle, and they shot him after telling him to drop it but he didn't.
Dislike these videos. They always have fuck all context and barely show what's going on, so your initial response is largely tailored to how you feel about the subject and not based on what actually happened.
Also, being homeless is apparently a crime.
If you can't demonstrate it, then you shouldn't believe it.