Never assume malice where ignorance will suffice.
You don't have to hate and fight people when they wrong you...you can just assume they acted out of ignorance and move on. It is one key to living a happy life, in my opinion. No one else is able to claim a spot inside your head.
Granted, at some point, you will encounter true malice. But, I think there is far more ignorance out there, and far less malice, than people usually think.