Chatting to someone I work with this morning about cycling and driving, she mentioned that cyclists who 'get off their bikes at red lights, walk across, and get back on' are 'dangerous'.
It sounded odd to me, when digging further it seems that it's actually more because it's 'annoying', but as well as that many cyclists getting back on on the other side are doing so 'not to the side, but in the middle of the road', and that they aren't in control when they set off again either. Had to ponder who the danger was to really, but apparently by the time they get back on the lgihts have changed back to green anyway and so there are cars coming up behind them as they get back on in the middle of the road.
There wasn't anything malicious in the observation, but the idea was not for turning either (I used the 'killed by...' stat comparison of bikes to cars and that's so different because there are so many more cars - though it was conceded that proportionately that still didn't work).
I think it's been touched on before here, that things are tagged as 'dangerous' either because non-cyclists don't actually understand what someone is doing (and when you're in the saddle it's perfectly safe), or simply because it's an easy get out when you find something annoying, but there's nothing illegal about what someone is doing. Mark it as dangerous and all of a sudden you can either make that cyclist out to be a bad person, or come across as compassionate because you're worried about their safety.