If you're a straight white guy who'se been accused of being politically incorrect, this might clarify what's happening.
Dudes. Imagine life here in the US — or indeed, pretty much anywhere in the Western world — is a massive role playing game, like World of Warcraft except appallingly mundane, where most quests involve the acquisition of money, cell phones and donuts, although not always at the same time. Let’s call it The Real World. You have installed The Real World on your computer and are about to start playing, but first you go to the settings tab to bind your keys, fiddle with your defaults, and choose the difficulty setting for the game. Got it?
Okay: In the role playing game known as The Real World, “Straight White Male” is the lowest difficulty setting there is.
This means that the default behaviors for almost all the non-player characters in the game are easier on you than they would be otherwise. The default barriers for completions of quests are lower. Your leveling-up thresholds come more quickly. You automatically gain entry to some parts of the map that others have to work for. The game is easier to play, automatically, and when you need help, by default it’s easier to get.
There was a huge discussion on the Best of the Left podcast, about 8 or 9 months ago. It also went heavily into gamer metaphors, including cheat codes.