I think most people dislike her because she is focused on quite a lot and has been in a position of high power in Congress for a long time. When Congressional approval rates hover around 20% for as long as they have I don't think there are very many people that like any of them. I don't think she is any better or worse than anyone else in her job, she has just been there longer and therefore is easier to hate.

The Kwanzaa thing was remarkably stupid even by USA government standards .