In all my experience riding my bike amongst other bikers and other cars on the road, 90% of bad behavior is committed by the cars. Some examples:
Passing 6 inches on my left at 50mph on a 35mph road.
Laying on the horn while you pass 6 inches on my left at 50mph on a 35mph road.
Passing in front of me only to make a right turn immediately afterwards, forcing me to slam on my brakes and nearly get hit.
Throwing things out the window at me.
Yelling obscenities out the windows at me.
I have to say though, while 90% of bad behavior in my experience is on the part of the drivers on the road, again probably 90% of my interaction with cars is positive. Often at a 4-way stop they will let me go first even though they have the right of way. At an intersection, they will let me turn left before they go straight, giving me the right of way. Or they give me a very wide berth (i.e. the entire lane) when they pass. I always give them a wave afterwards.
Passing 6 inches on my left at 50mph on a 35mph road.
Laying on the horn while you pass 6 inches on my left at 50mph on a 35mph road.
Passing in front of me only to make a right turn immediately afterwards, forcing me to slam on my brakes and nearly get hit.
Throwing things out the window at me.
Yelling obscenities out the windows at me.
I have to say though, while 90% of bad behavior in my experience is on the part of the drivers on the road, again probably 90% of my interaction with cars is positive. Often at a 4-way stop they will let me go first even though they have the right of way. At an intersection, they will let me turn left before they go straight, giving me the right of way. Or they give me a very wide berth (i.e. the entire lane) when they pass. I always give them a wave afterwards.