Ultimately, the only person who can be responsible for his/her actions is him/herself. The problem arises that many drivers seem to have the attitude of old racists. "Somebody who was this color once stole my wallet so now I hate everybody that color." Its stupid, and doesn't make any sense, but I think a lot of drivers only notice the cyclists doing stupid stuff. They may pass 50 bikes on their way to work, but the only one they notice is the one who runs a red while they are sitting at the light. From that they decide that all cyclists are irresponsible.