Thousands of Guatemalans took to the streets May 16, demanding the nation's President Otto Pérez Molina step down amid a scandal that has already forced the resignation of his vice president, Roxana Baldetti. Despite rain, protesters marched in 13 cities. Throngs filled the capital's central plaza, where a giant banner read "We are the people." The mobilization was largely leaderless, organized by social media under the hashtag #RenunciaYa (Resign Already). It all blew up in April, when the UN International Commission Against Impunity in Guatemala released findings of an investigation into a customs bribery ring uncovered by Guatemalan prosecutors. Baldetti's private secretary, Juan Carlos Monzón, was named as the ringleader, forcing Baldetti to step down May 8—despite protesting her innocence. Pérez Molina likewise pleads ignorance about the ring, dubbed "La Línea," and pledges a crackdown on corruption. Monzón is on the lam and an Interpol warrant has been issued.