Well, no I'm not in favour of thumping people as a general rule but.......
"As for the potential for getting punched on the nose if you walk into a bar wearing Glass... well, idiots get thumped all the time for lesser reasons and anyone who shows such a staggering lack of social grace will get no sympathy for me."
.......if you did walk into a bar with a camera and start photographing perfect strangers without their say-so that is very like what would happen. When equipped as a glasshole however a certain type is going to assume that:
A. He cannot see whether you are using the camera or not.
B. He will then insist that you take them off so that you couldn't take any.
C. He will then thump you if/when you refuse.
The old tradition (from a very long time ago) that it is unfair to hit someone wearing glasses will take on a whole new meaning in as much as those wearing glasses will be considered to be fair game in certain circles.