The New York subways are plastered with ads for the state lottery (examples are here, here, and here) with the slogan "Multiply Your Money." That's a deceptive, dishonest, misleading ad, because the government makes money on these lottery games, so on a net overall basis, the players don't multiply their money, they subtract or divide their money, winding up with less of it than they had in the first place.
If some privately held Las Vegas or Atlantic City casino tried advertising in New York Subways telling customers they could "multiply their money," the state attorney general would be all over them with false advertising claims. But because it's the government doing the deceptive advertising here, the government gets away with it. It's maddening even for those of us who don't buy lottery tickets.