In 2011, Bui Thi Minh Hang protested in Hanoi and in Ho Chi Minh City. She protested against Chinese land claims on the Spratly and Paracel Islands. Police arrested her and sent her to sent her to Thanh Ha Education Center, a reeducation camp in Vinh Phuc province. There was an international protest about her arrest. She was in the reeducation camp for six months without a trial.