FBIinNY is exactly right - it's a distraction/scape goat, it has no basis in reality. Blame someone else, yell...try to obfuscate. Ultimately you're responsible for your own actions.

I absolutely detest sidewalk riders...nothing would make me happier than jamming a silca into their front wheel. I don't get to do that because we have rules. I also don't get to go on a rage because of a sidewalk cyclist, punch a cab driver and say the biker made me do it.