I agree that the song is about revenge, but I think more specifically it's about getting revenge on the man, or those who try to keep you down; however, he's not advocating violent revenge, but rather to channel your anger into a positive energy that you can use to get even with those that have been taking advantage of you.
I agree that the song is about revenge, but I think more specifically it's about getting revenge on the man, or those who try to keep you down; however, he's not advocating violent revenge, but rather to channel your anger into a positive energy that you can use to get even with those that have been taking advantage of you.