sentences:  A similar protest against China's actions over disputed maritime territories occurred on October 8, 2010 with approximately 70 members of Viet Tan in attendance in Hanoi, Vietnam.The members said it was their responsibility as citizens to speak out, and passed out T-shirts and hats calling for the government to defend its right to sovereignty over disputed islands in the South China Sea.On November 17, 2007, three Viet Tan members, US citizens Nguyen Quoc Quan, a mathematics researcher, and Truong Van Ba, a Hawaiian restaurant owner, and Frenchwoman Nguyen Thi Thanh Van, a contributor to Viet Tan's Radio Chan Troi Moi radio show, were arrested in Ho Chi Minh City.