? You flat out missread that. The idea is while the rate of violence will not change google glass style head cams will become popular AND increase the amount captured on video. Much like cellphones increasing the number of videos where cops beat someone. People don't buy cellphone to capture vides of copes beating someone, but if you can capture a video and can see such a beating you may upload the video.

PS: Clearly, dash-cams in Russia are primarily used to deal with specific problems mostly related to corruption / scams. But, they also catch interesting videos like this meteor.