@Memphes what you did was wrong. I realise the cause for your anger.
One biker was killed near richmond road few days back by a bus who broke the red light and sped ahead.
Your safety is your concern. In this selfish world noone cares about anyone else. What you did may have given you some satisfaction at that moment but it was wrong. Anger is he worst possible enemy of a man. Things done or said in anger can only make you regret later.
You may have pulled his wiper in the heat of the moment and ran off. But the bus driver will also feel angered and want his pound of flesh. What will he do then? He will transfer his anger that he had on you onto the next biker who does the same thing. And may potentially end up killing some innocent biker just because of your action. This is what always happens.
Ive been advising for so many posts and im sure youve been reading from before, that always control your temper. Anger never gives good results. Our citizens have become so much filled with selfishness that they dont realise stopping and helping some prove a point is going to help in the common good. Everyone is just I, me and myself these days.
What you should and every other person reading this post should do is learn to anticipate whats going to happen next. What will happen if you try to close the gap, what will one second of acceleration help in, what is going to be the driver's next move, is that biker going to indicate for his turn or he will just turn without the indicators.
These are some of the things that if one doesnt pay attention to only ends up making your already bad road experience worse. Once you start anticipating you will see that in turn you will start taking bad drivers in a lighter mood rather than turning violent.
For ex, suppose you are driving with a friend. You notice that the biker in front doesnt look like the type who indicates before a turn. So you increase the gap between your car and the biker. Once he turns and doesnt indicate, you can tell your friend, "Haha saw, i told you that idiot wont use his indicator" instead of the angry reaction like opening window and shouting to the deaf biker " Yeh kya tera baap ka road hai?(is this your father's road)"
Trust me this way lot of cases of road rage and angry young men can be avoided and you will return home safely without any guilt.
As for the current incident, no use crying over spilt milk. You may have got away with it but next time try not to do it. Think the bus driver may have to pay through his salary for the wiper of a volvo or for that matter suppose its raining, he wont have a clear field of view in front (due to lack of wiper) and may end up running over someone.
Please next time just think of your loved ones when angry and think of the good times and get home safely. Later use a punching bag to get rid of the anger. And never transfer the anger you have on someone on the road to anyone else.
And you are riding a bullet. You shouldnt bother about anything on the road. Way cooler than what everyone else is riding

why the anger then.
Cheers. Keep thumpin' ahead.