OK perhaps the title is a bit extreme, but it's a topic worthy of a bit of general debate.
I noticed this morning 2 bikes that I've never noticed before, in/next to "my space" in the office bicycle racks. OK so it's not "my" space, and I'll get over that (or get in earlier and reclaim it) but it's the one I always use and leave my lock there overnight. I've no problem moving between spaces actually.
But the problem was, these 2 upstarts had locked their helmets to their bikes, through the rack with their D locks. These are very low and tightly packed "wheelbender" racks and by doing this, they blocked the adjacent space from being used as their helmet was locked over it. It's very busy at this time of year now all the summer cyclists have emerged.
I let it lie this morning (muttering my dissaproval to people who I knew were not the offenders) but it's unlikely that I'll be at the rack and the precise moment the miscreants are, to repremand them in person. So what's to be done?
I'm not the sort to "accidentally" knock their bikes over, thus bending their wheels (I always lock mine alongside, rather than in the racks, as they are particularly stupid).
A nice note on the bike? A poster on the wall? Let their tyres down? Put treacle on the padding of their helments?