Integrity, honor, a willingness to serve your country, putting your life on the line to uphold the things you believe in, those are all admirable traits. What's not an admirable trait is blindly following orders and not questioning the justice of your actions, or the actions of your group as a whole. Be proud of the people you've helped, but stop and listen to the people who argue against what you're told to do. You might just learn something important about why you're feared and hated so much.