Japan has some of the World's lowest rates of violence towards children.
If you're thinking of lolicon culture, that's something else: fiction. If anything, there's a pretty strong argument in favor of lolicon-style pornography as beneficial to society, when you consider the amount of rape reported in Japan.
Also, your depiction of Japan makes it sound like it's men are a bunch of grunting, schovinistic wife-beaters.
Please be more specific.