As someone else mentioned, the RLJer, or any other miscreant on the road, may change their habit if 10 cyclists were shouting at him. We need more people pointing out antisocial behaviour, but you suggest we just let them get on with it. That's why they do it! We've become a society of wimps, we don't complain enough, and as a result we all suffer at the hand sof the louts.
And you just carry on shouting at RLJer's David, you might get someone else to join in.
Crikey, I don't think I ever shout at anyone. In fact, I'm really surprised the guy heard me - I'm sure he didn't hear what I exactly said but the fact I was speaking and looking at him was enough to make him lose it...