I only hate people who give me a bad attitude and show me a general lack of respect, whatever those types might be. Often I will resist doing something for someone purely out of spite if I feel that aren't taking my interest into consideration and are just trying to strong-arm me into doing something for their own agenda. If instead the person is agreeable and treats me as his/her kin rather then some tool I can be quite generous in what I'm willing to do for them, regardless of their background or political beliefs.