The wage gap is also curious because these days it results mostly from men and women doing different kinds of work, and campaigners demand totally different solutions for high-status jobs than they do for low-status ones. For stuff like tech industry startups there are lots of campaigns to include more women. On the other hand, if you take street-side trash collection (another job which is also largely male) instead there are campaigns for women to get the same pay for doing "equivalent" jobs like office cleaning.
Now, trash collection of this kind is an awful lot more dangerous than cleaning offices and this is both why it's better paid and why there are few women doing it; for various reasons people get more upset about a woman dying in a horrific industrial accident than a man so employers have an incentive to discourage women, and there's not so much social pressure for them to get dangerous jobs. Equality would require making people care more about men dying or less about women, both of which benefit men rather than women, so feminists go for the unequal option of paying women for doing less than men instead.
Edit: For example, if you play video games take a close look at the gender of the mooks that you kill en-masse. That's just one of the subtle messages saying that men are disposable in mass media.
