I"m with you buddy.
I cycle a lot here in London, and in the hoard of Wiggo-wannabes, there are a lot of assholes. The cycling "revolution" (I read reversion, reversion in the face of awful public transport and jam-packed roads) can take place in relative safety, but it isn't, and we lose a cyclist a month, usually to trash trucks turning in on them at junctions. It's horrible.
Cyclists don't need to be deferential, they shouldn't be aggressive - they should get on their bikes with a defensive driving mindset, and practice good road etiquette. 90% of cyclists do, and 50% of those can actually control their bikes. The other 10% ride like dicks. They don't just jostle at reds (we've got a lot of special bike stop lines about 15 feet from the car stop) - they will pull in front of people (like me), readying for the takeoff.
I'm fast though - I've cycled my whole life, I ride a 20 year old mountain bike with slicks, and I keep pace with all but the superfit guys on $10k bikes. So that jostling, it pisses me off. Get out of my way.
That aside, bike on bike not being the problem, cyclists need to be good ambassadors on the road. Ambassadors for cycling. 10% of cyclists are, and a fair percentage follow the lead. I am. But the level of militant aggression fuelled by organisations like the London Cycling Campaign, with which I correspond, is tilting the overall feel on the road - even for me, as a cyclist - against the mass of cycles zooming round. The 10% are sufficiently arrogant, and organisations like the LCC sufficiently unresponsive to the threat they're creating, that 50% of drivers get pissed at cyclists.
Which pisses me off. Because they're upsetting the balance - in favour of a worse situation. Where you do get cut up, just for cycling, not because you actually did something.
Jumping reds is the Number 1 frustrating thing for vehicle drivers to watch. They hate it, with a vengeance, almost to a person. It's bad news, and it creates a real tension. The win for the cyclist is empty - they gain 2 seconds.
So a couple of months back, this guy cuts me up in the middle of town, and I go down over the bars onto my head, very very hard, and crunched every vertebra in my spine. That cancelled my Bali surf trip - concussion, bad back, luckily no busts. The first thing he says - "that wasn't my fault". He was big, hostile, and difficult, right up until I had the luck to have a witness step forward. The point is - he immediately put up a front that it was my fault, because I was cycling, and "cyclists are arseholes".
I wasn't surprised. That general attitude is developing and generating here in London - because the cyclists aren't reigning in the dicks. The bad apples are spoiling the barrel.