msnbc:Sen. Chris Murphy is tweeting every U.S. mass shooting...

msnbc:

Sen. Chris Murphy is tweeting every U.S. mass shooting in 2015

As pundits and average citizens reflect on the year past during this New Year’s Eve, Sen. Chris Murphy (D-Conn.) is marking grim milestones.

The pro-gun control lawmaker is tweeting details of each mass shooting this year in a painful reminder of what feels to be an especially horrific 12 months of violence. There have been almost as many mass shootings in 2015 — 353 — as there are days of the year, claiming th...