It's "******y" to cycle on a sidewalk for sure. It's equally as ******y to clothesline someone off a bike as they cycle on a sidewalk. Not too mention illegal, irresponsible and cowardly. It's also "******y" of car drivers to swerve at cyclists, damaging said car with a u-lock is equally as bad.
A lot of the posts in this thread do not do a great deal for the image of cycling.
"Less rage more actually sharing the road" is one of the most sensible comments in this thread. Most of the rest of it is pure nonsense and looks terrible for new members such as I.
Some people need to go to a gym and hit a heavy bag for a while to work out that aggression, or just ride their bikes with a smile nomatter what.