Mock the idea of having a character witness at someone's sentencing and suggest ridiculous things that they could say, such as blaming the victims for having too much stuff in their garages.
You can be a character witness at his sentencing. Tell the court how you never heard anyone say, "Now there's a guy ripe for a tire-slashing spree if ever there was one." Be sure to mention those demons, too. And that the "people involved" deserve some of the blame for having their garages stuffed with crap and creating such a target-rich environment.