There was a guy who periodically made random accounts and called everyone who agreed with legalization worthless loser stoners on threads related to the subject. I forgot what his nickname was. He doesn't really count because he seemed somewhat obsessed with that particular subject.
There was someone else though, I believe some sort of case worker or someone who's job involved a lot of community service in poorer neighborhoods, who was also very anti-legalization of marijuana. He had slightly better arguements but overall they amounted to mostly personal prejudice.