No, these subway ads aren't from an alternate reality at all. They're from history. And yes, that does appear to be a child laying in a pool of his own blood, while a man walks over to make sure he's really dead.
Remember how extreme everything had to be back in the 90s and early 2000s? Forget your stupid skinny jeans and your doofy smartphone; that was the decade of extreme sports, No Fear t-shirts, and in-your-face video game advertising. Even our burgers had to be EXTREEEEEEME!