Congress broadcaster turns to Periscope to show gun control sit-in

The public broadcaster that covers the US Congress aired live social media footage Wednesday to cover a dramatic sit-in over gun control, beaming out a lawmaker's private Periscope feed in a daring breach of political protocol. Following established protocol on how it covers House proceedings, the C-SPAN cameras went dark for the recess, even as several dozen Democrats including civil rights icon John Lewis chanted "No bill, no break!" and sat down on the carpet. "C-SPAN has no control over the