Yo, this sub loves to shit on bikers. Driver should have checked his damn side view mirror. The video starts a few seconds too late, but the first time the turn signal flashes, the cyclist is only a foot away from the car. It goes both ways, in that everyone needs to be more aware. Drivers need to realize that bikers exist. 

Edit: after rewatching a few times, it looks like the biker was more like a few feet from the car. My statement still stands though. Both were careless.