Then do your discussion, questioning, challenging, and refuting in appropriate fora - which would not include mobbing a volunteer docent at a museum. If I paid a fee to have a docent take me around a museum exhibit, and some mob of jerks began harassing her and keeping her from doing her job - which is presenting the museum's exhibits to visitors - I would go to a security guard and report them. And that goes for environmental wackos, Marxists, PETArds, creationist holy rollers and anyone else.
Me? Did I give my viewpoint somewhere?
Geez... quite the condescending attitude.
I get the impression that you are not one with which a rational discussion can be held. You are on the attack in the same manner as what you are attacking. It is hard to build much of a standing by rolling over those that may agree but be more personable.