Good for you for standing up to them and speaking your mind, Limewave!!
Sorry you have to be stuck with them (and their closed minds about others who are different- heaven help the defendant).
I served jury duty last year, and even tho most of them were nice, there were some totally obnoxiously opinionated people sitting on that jury. Heaven help me if I ever have to go to trial and have a jury. I get the feeling most people in my community are not my "peers."

Yes, ride your bike, carry your helmet with you and show them that being a cyclist means being one of them, not one of "them" (the unknown person).