If I had a superpower, I would definitely do some evil with it. Not a lot of evil. Nothing like slavery or genocide type evil. But definitely a little bit of evil.
Something on the order of putting a little dog hair in every burrito of the first person to say "I'm not racist but..."
Or forcing the originator of the "I identify as an attack helicopter" hate meme to actually, literally, genuinely internally identify as a 24,500 lb, 64 foot long Blackhawk UH-60.