Paper 1, which prints only truthful and legally fact-checked stories about how X is fucking over Y and X is clearly evil, gets a lot of paid subscriptions from people who support Y.

Meanwhile, paper 2 prints only truthful and legally fact-checked stories about how Y is fucking over X and Y is clearly evil, getting a lot of paid subscriptions from people who support X.

The real truth is that X and Y both do good things and bad things, and always take the opportunity to fuck each other over, leaving plenty of factually correct material for the partisan journals, who just don't bother reporting all the skullduggery their "own side" gets up to.