Law 53 prohibited all discussion of this cause, leading to events like the (*)
Under pressure from Jose Serrano, Louis Freeh admitted that the FBI illegally tapped the phones of a party associated with this cause in the 1960s. A law that targeted supporters of this cause was challenged by Santos Amadeo of the ACLU and was nicknamed the "Little Smith Act." Supporters of this cause bombed New York City's Fraunces Tavern in 1975. Alvin Bentley was seriously injured by supporters of this cause who snuck semi-automatic pistols into the Ladies' Gallery in the House of Representatives, under the direction of Lolita Lebron. Law 53 prohibited all discussion of this cause, leading to events like the (*) Jayuya Uprising and the attempted assassination of Harry Truman by Oscar Collazo and Griselio Torresola. Historical groups belonging to this non-Venezuelan cause include Filiberto Ojeda Rios' FALN and Pedro Albizu Campos's PRNP. For 10 points, name this political stance that opposes American control of a certain Caribbean island.
Under pressure from Jose Serrano, Louis Freeh admitted that the FBI illegally tapped the phones of a party associated with this cause in the 1960s.
Puerto Rican independence [or  Puerto Rican nationalism; accept clear-knowledge equivalents]