The bizarre thing about this scene was that it seemed like a lot of time passed between when I first noticed the arguing as to who was at fault and when the lights finally changed. I couldn't tell you if every driver, having front seats to the altercation, just delayed driving off while the light was green to enjoy the show or if there was a time warp, but the process seemed to take forever. I also couldn't tell you if someone was clearly at fault, although it seemed clear that the cyclist who left the scene was riding against traffic. But I don't know this. Perhaps the cyclist who left was unnerved and was just heading back home.
If this seems bizarre and disjointed, you should have been there.
It's not uncommon to see driving that endangers vulnerable road users. Last week, after someone, seemingly purposefully, buzzed me at the very spot this incident took place, another driver in his Prius, with his coexist bumper sticker, passed me after swerving wildly leaving Davis Square on Elm Street. I wish he wanted car drivers to coexist with cyclists as much as he wanted religions to COEXIST. By the way, he was looking up a telephone number and was talking on his phone when he passed me. Stuff like this happens and you have to ride defensively and I do. But it's equally common that I see cyclists do dumb things to endanger other cyclists. I've been watching places where bike paths intersect and, whether or not I am required to stop, I will because half of the cyclists who I notice don't worry over a stop sign on a bike path. Then I see the results of this incident and feel pretty good about being cautious around bikes as well as around cars.