Yeah, it's self-righteous, smug, and ridiculous to call someone an idiot for riding the wrong way--as I see people doing nearly every day on my commute. Gosh, what was I thinking? Cyclists should be allowed to be erratic and unpredictable, forcing me to take a lane of traffic or swerve into the door zone to avoid them. If it's convenient for them to ride a block the wrong way and inconvenience/endanger others, who am I to judge?