Democratic Sen. Elizabeth Warren of Massachusetts tried working herself up at Wednesday’s gun control rally outside the White House but couldn’t manage to find her stride despite being filmed by MSNBC. Warren was asked what was going through her mind, and she immediately blamed the National Rifle Association (NRA) for a lack of gun control reform. “The NRA has held Congress hostage for years now,” Warren said. “These young people have shown up to spring us free, to say you’re not here to do the work of the gun lobby. You’re here to do the work of the American people....