Identity politics, a writer friend reminds me, is where liberalism goes to die. The oceans are boiling, freelance journalists' heads are getting lobbed off, and there's not the slightest sign of resistance to income inequality so out of control it would worry Cornelius Vanderbilt.

Yet the Internet's politically correct "social justice warriors" are dedicating their formidable energies into attacking piss-ant trivialities.

Anyone who doubts that online slacktivists have their heads so far up their collective asses that they can't see daylight need only read up on the controversy over Undercover Colors, which is a nail polish that allows women (or men, but they're not the target audience) to discreetly discover whether their drink has been spiked by one of several common "date rape" drugs.