The pattern was established long ago. A killing spree happens. The Democratic Party and mainstream media erupt in calls for gun control. Republicans shy away from cable news for a few days. Various fixes to the background check and mental health systems are proposed, video games are criticized, and eventually our attention turns elsewhere, until another spectacular attack restarts the cycle. President Trump increases the volume and heightens the perceived stakes. The advocates of gun control, such as Elizabeth Warren, say he's a "white supremacist." Opponents of regulation say he's the only thing that stands between them and dispossession of their Second Amendment rights.