The way to tell that I'm evil is that my life style is much better than some of the people around me. I have a home, I have a car, I have clothes that fit properly. Some people have none of those. Sure it's not directly my fault that the guy working at McDonalds does not have a car, but I'm still evil. My having a car somehow means that I'm screwing him over. It's a fact.
You definitely feel evil. I can feel it in your denial and that you keep bring it up. Next time you see somebody in a white suit in front of a store asking for donations drop a few bucks in. You'll feel right as rain.