Car drivers get upset and make the big generalisation because we standout
Safety aside, this is the main reason why I don't run red lights.
At any given intersection half a dozen drivers might notice a rider run the red light....
At least one of them would think to him/herself "F%^%#! cyclists, shouldn't be on the road. Menace to society blah blah blah!!^#%$$#"
The more drivers on the road that feel that way about cyclists, the less safe I am.
I think this defeats the argument that the only person affected by running the red light is the naughty cyclist. And I've chased a lot of them down and explained that to them (after pulling their iPod out of their ear!)