Mankind has been trying to root out evil in the world for a very long time my friend, some random on an imageboard likely won't fare much better than those before him.
Should the small opportunity present itself then yes, right the wrong in front of you, no matter how trivial it may be. Other than that , it would be best if he focuses on his "other problems," such as work, school, his social life. You know, the areas where he can actually make change for the better.
To answer the OP: I see evil in the same manner as I do clouds, forests and mountains; its part of being on this cerulean death-orb and that's not going to change. I'm not entirely certain what evils you refer to exactly, but personally I find it best to accept most of it, as there is little that can be done by just me alone. However, my advice to you would be to focus on the evil within your sphere of existence and do your best to remedy it when at all possible; at the very least you can control your personal life and try to keep it on the straight and narrow.
The world can fend for itself. Make differences where you can. No use fretting over what you can't change.