I don't know where in the world all these bad guy's come from. I've been riding for a long time and have never seen an actual outburst like this EVER, for touching (sitting on may be diff.). The most I have seen is a few firm words, never violent.
By the way in the car show world it's the same "DONT TOUCH" Rule.
There we have signs that say " If you don't wash it, DON'T TOUCH IT " signs... even with that they still do on occasion.
I've got a feeling that there aren't really that many BAAAAD Bikers out there (but no doubt there are a few). Talking or writing about it is probably as far as it goes.

 

You answered you own question about these "tuff guys".