Do you feel any Indian guilt for the murders they committed aginst whites (or each other)?
What about your European ancestors? They were victims (and protagonists) against other Europeans. Do you shed any tears for them?
Live in the here and now. Instead of feeling guilty about the past (in which YOU had no part) live your life in a positive way. Help your fellow Man (and Woman). Be kind to others. Life's too short to carry emotional baggage that you never packed.