I don't have a problem with people who like to cycle.  It doesn't bother me.  There was one time though a cyclist was hogging the middle of the road and wouldn't pick a side.  I gave him a slight honk and he wouldn't budge.  My second honk was louder and longer and he got the message.  Anyway, it wasn't a big deal.  But that's the first thing I thought of after watching this video. 

Here are two cyclist that are clearly doing nothing wrong.  They're on the right side of the road and well to the side, and this driver is ticked off for some reason.  Check out how long this guy keeps honking at these two.