I think I posted this in another similar discussion. But let me clarify before I repost that I would not be a superhero. More like a criminal stealing from criminals with selfishly noble intentions.
Using a dog or wolf morph, I would track down drug dealers and follow them around until I was sure they had enough cash to be worth attacking. Then in a quiet area with no surveillance or witnesses, I would attack them and rough them up just enough to keep them from being able to defend themselves as I demorphed and took their cash.
I would call an ambluance as soon as possible to be sure that the dealer not only got medical attention, but in all likelihood wound up either in jail or a mental hospital but ultimately off the streets.
As rumors of animals being trained to attack suspected criminals began to flourish, I would move from the area either a state or a town away and repeat the process.