We've heard a lot about how the group that calls itself the Islamic State, or ISIS, has mastered social media like Twitter. Ellie Hall, a reporter for BuzzFeed News, has been tracking the tweets of female ISIS recruits. Recently, a woman with the handle Umm Jihad caught her attention.
ELLIE HALL: She said that someone should kill the president. She called President Obama a treacherous tyrant. She advocated - she said, why don't you go rent a car and drive over everybody at a Patriots' Day Parade?