The NFL's players and owners find themselves trapped in a collapsing pocket of their own creation — and at risk of getting sacked by millions of fans across the country. Two weekends ago, many team owners appeased their players by participating in national anthem demonstrations after President Trump's rather profane demand on Sept. 22 that owners fire any players who kneel. These demonstrations didn't go over well with many NFL fans — millions of whom are white, older, and conservative, and see any demonstration during the national anthem as fundamentally unpatriotic. So last weekend, some teams tried to innovate solutions...