[feeble attempt at humor]OK, here's the real truth about why a 'biker' would damage your ignition. It was envy. It was probably a group, or 'gaggle' of these guys together that did the deed. Real envious. In fact they were so envious that they wanted it, or at least to sit on it. But they didn't want to be seen sitting on it, so they had to wait until after dark. They figured that if they did some very minor damage, just enough to prevent you from being able to ride it home, you would be forced to leave without your bike and return for it later. At which time you would find that your bike had been discretely sat on and fantasized about by a gaggle of those folks who ride 'other' bikes.
[/feeble attempt at humor]