"Specific cases can always poke holes in debates - and can be used by each side (i.e., would it be better to hate Nazis, or simply be indifferent to them?). As a concept, I stand by my answer - it requires involvement in an issue; as long as you've got your reasons for hate, it's got a certain degree of legitimacy."
Ah, a Nazi reference in online debate! Sorry, had to point it out.
Anyway, the hate towards Nazis would be a reaction to their hate towards ethnic groups. Different situation. I am saying that indifference is better than hate; however, hate is understandable was indifference is not given. Undue hate can be met with hate in a morally defensible way, but proactive hate is much worse than indifference.