Disturbed?
I can tell this was a quick work, not a lot of detail is present in it, but for a picture like this, not a lot of detail is needed. The simpleness of the picture describes all the emotion put into it. I love the idea of it, standing up against the wrong. It reminds me heavily of Disturbed and it almost looks like an influence, I must ask, were you listening to Disturbed when you drew this?