"Dominated, hippie! Get a job!" "You better hope there's hacky-sack in Hell, hippie!" "You are now a conscientious objector to being dead, hippie!" "What's the matter, hippie? Hair get in your eyes?" "Get a haircut, hippie." "You're a disgrace to the uniform."
Nobody said you shouldn't have an opinion but it's like going to someone on the street and telling him you don't like his hat. Seriously, who cares? It's not like he won't wear that hat anymore. The youtube video you linked say you are not a dick if you have things you don't like, I have things I don't like, yet I don't go to those places and say them out loud. It's just not polite and that is where hate comes from.