I don't like double standards any more than you do. Since punishment is doled out "multiplicitously" ie without equity, where society favors one group over another, what is the best way of righting the problem? As I mentioned, the only way anyone has come up with dealing with the basic unfairness of the system has been some form of affirmative action.
It works the other way as well: in New York (and other states), for example, the death penalty can be handed out to someone found guilty of killing, specifically, a cop. I don't agree with the death penalty, but how is the killing of a police officer a worse crime than the killing of someone who is not a police officer? I haven't seen much protest about "equal protection under the law" regarding these laws... perhaps because people don't wish to be called out for "going soft on cop-killers"?
That is actually an excellent point. I think the difference there, however, is that killing a cop is considered an assault on the basic principles of law and order...an assault on the larger civil society itself. You have a point though. As much as both types of crimes are horrible (hate and cop killing), I wouldn't object if both laws were overturned on EPC grounds.