SKOPJE, Macedonia (AP) — Chaos swept into Macedonia's parliament Thursday as demonstrators stormed the building and attacked lawmakers to protest the election of a new speaker despite a months-old deadlock in efforts to form a new government. Dozens of protesters, some of them masked, broke through a police cordon after the opposition Social Democrats and parties representing Macedonia's ethnic Albanian minority voted to name a new parliament speaker. Shouting, hurling chairs and grabbing camera tripods abandoned by startled journalists, the protesters attacked lawmakers, including opposition leader Zoran Zaev, who was seen bleeding from the forehead. TV footage showed a bloodied Zaev and other Social Democrat lawmakers surrounded by protesters waving national flags, shouting "traitors" and refusing to allow them to leave. The U.S. Embassy in Macedonia and senior European Union officials condemned the violence, while neighboring Greece warned that Macedonia might be "sliding into deep political crisis."