Mark Cuban made a mistake Monday afternoon. A TMZ camera found him outside a restaurant in California, and the Mavs owner actually stopped and talked to the paparazzo. Quickly, Cuban was talking about the Red Hen restaurant in Virginia and its decision to deny service to White House press secretary Sarah Huckabee Sanders. Although he likely didn't know it at the time, Cuban was about to stir up Trump Twitter, a group that's never met a stupid fight it didn't like. Here's what Cuban said with regard to the restaurant. “It’s a good question. You can make an argument on...