The art of politicising a tragedy
Caveat: Since this is a blog, and not an article, I play loose with language by treating the left and right as two homogeneous groups. That's not accurate, but is hopefully not so inaccurate as to defeat my purposes.
America seems to be characterised increasingly by acts of gun violence. The response depends on features of the gunman. Typically, those on the left will use the opportunity to call for gun control. If the gunman is white, those on the right will offer thoughts and prayers, and perhaps say something about mental health. If he isn't, they'll say something about immigration, perhaps endorsing Trump's Muslim ban.
What follows, in any case, is that each side accuses the other of 'politicising a tragedy'. There have been screenshots on Twitter of people on both the right and the left reacting very differently to an episode of gun violence, depending on whether it supports their narrative. If it doesn't, opponents are reminded not to politicise a tragedy. If it does, a particular policy proposal is made.