Last week, Donald Trump did something that broke decades of history and infuriated much of the media. It was also one of the least surprising decisions of his presidency. When Trump prevented several media outlets from attending a private White House briefing with Sean Spicer, he simply followed through on a campaign promise. After all, Trump engages in a self-declared “running war” with the media. In order to win his war, he seeks to limit the effectiveness of certain publications in covering him by cutting off their access and delegitimizing their sources.