I really don't think there's a lot of "hatred" for Perry.

What there is, I think, is people coming to the realization that he is not competent to serve as POTUS, arguably the most powerful political position in the world. His statements on several issues have been too scatalogical, and his overly-casual preparation to argue for his nomination speaks either to shortcomings in his intelligence or his commitment.

Criticisims such as these are not "hatred".

(I know I used a term not commonly used. "Scatalogical" is a combination of scat and logical. It is used to describe a way of thinking that is neither sensible or logical.)