On October 30 , 1950 , a group of Puerto Rican nationalists , led by Pedro Albizu Campos , staged several local attacks , known as the Puerto Rican Nationalist Party revolts of the 1950s , the most successful of which is known as the Jayuya Uprising . The revolts included an attack on the governor 's mansion , '' La Fortaleza . '' Puerto Rican military forces were called in to put down the Jayuya Uprising . Two days later , two Nationalists from New York tried to storm in to Blair House , then the president 's temporary residence , to assassinate United States President Harry S. Truman . These acts led Muñoz to crack down on Puerto Rican nationalists and advocates of Puerto Rican independence . The actions by both Muñoz and the United States ' Government would later be determined as infringing on constitutional rights
governor 's mansion
San Juan Nationalist revolt
History of Puerto Rico