I don't want to be all like 'look at me, I'm wordly, aww you naive child'. I know, it sucks. But... background is, pretty much everywhere on the planet except a few places for thousands of years.
The statistics on this are absolutely appalling, particularly as violence against women is one of the most under reported events we know of. In short, if the female gender were to have created a religion over the past thousands of years, man would have taken on the role of the devil quite fittingly.
It's true that violence against women is very common and that is one possible explanation for this image. But isn't it possible that these people are just drunk and stumbling over each other? Maybe if someone found this image's location on street view we'd be able to see the couple of frames before and after this one and get better context.
[0] http://40.media.tumblr.com/b25992bbea23f4cac12d7dde172a4295/...