In the 1950s, various organizations, including some advocating armed uprising, competed for public support in bringing about political change. In 1956, Fidel Castro and about 80 supporters landed from the yacht ''Granma'' in an attempt to start a rebellion against the Batista government. In 1958, Castro's July 26th Movement emerged as the leading revolutionary group. The U.S. supported Castro by imposing a 1958 arms embargo against Batista's government. Batista evaded the American embargo and acquired weapons from the Dominican Republic, including Dominican-made Cristóbal Carbines, hand grenades, and mortars.