"celebrating"?
Most homeless and mentally ill people are harmless, and more likely to be victims than attackers. Homeless people are at risk of attack both by the housed and unhoused. Unlike the housed, the homeless have no locked doors to protect them when sleeping. I've heard that homeless women are "terrified". One told the City Council a while back about being repeatedly raped and beaten, and that she felt she couldn't go to the cops about it because she was "camping illegally". The vicious prejudice being expressed against the homeless encourages violence towards them. So I have trouble feeling much sympathy for this women. At least she had a locked car to protect her.