Alexandria Ocasio-Cortez stunned the nation when she defeated longtime Rep. Joe Crowley (D-N.Y.) in a Democratic primary back in June. In vanquishing Crowley, who held the fourth-highest position in Democratic House leadership, Ocasio-Cortez showed the appeal a political newcomer can have in a party increasingly fed up with its old ways. But Washington Post reporter Seung Min Kim exposed the potential pitfalls of Ocasio-Cortez's greenness in a tweet Friday, calling out the probable congresswoman for holding a public event that was closed to the press.