The original content of Democracy Now! Headlines appears under the Creative Commons BY-NC-ND 3.0 License (United States). For more, including their other shows and media, visit www.democracynow.org. May 31, 2011 Yemen Security Forces Kill 50 Demonstrators at Peaceful Sit-In --------------------------------------------------------------- The United Nations is reporting more than 50 demonstrators have been killed in the southern Yemeni city of Taiz since Sunday when government forces violently attacked a peaceful sit-in protest. Troops also stormed a field hospital and detained 37 of the wounded receiving treatment. Meanwhile, Yemeni warplanes have launched air strikes in the coastal city of Zinjibar which was recently seized by Islamic militants. Opposition leaders have accused President Ali Abdullah Saleh of deliberately allowing Zinjibar to fall to militants to try to show how chaotic Yemen would be without him. .