Various events took place in Puerto Rico during the 1930s thru the 1950s, involving the
Puerto Rican Nationalist Party and the local government which influenced Margenat's political views and his way of thinking. The
Río Piedras massacre on October 24, 1935, a confrontation with police at
University of Puerto Rico campus in
Río Piedras, in which 4 Nationalist partisans and one policeman were killed. On February 23, 1936, two Nationalists named Hiram Rosado and Elías Beauchamp, were arrested, transported to police headquarters, and executed within hours without trial for the murder of U.S. appointed Police Chief Francis Riggs. No policeman was ever tried or indicted for their deaths. On March 21, 1937, a peaceful march organized in the southern city of
Ponce by the Puerto Rican Nationalist Party turned into a bloody event when the Insular Police ("a force somewhat resembling the
National Guard of the typical U.S. state" and which answered to the U.S.-appointed governor
Blanton Winship) opened fire upon what a U.S. Congressman and others reported were unarmed and defenseless cadets and bystanders alike killing 19 and badly wounding over 200 more, many in their backs while running away. An
ACLU report declared it a massacre and it has since been known as the
Ponce massacre. The march had been organized to commemorate the ending of slavery in Puerto Rico by the governing Spanish National Assembly in 1873, and to protest the incarceration by the
U.S. government of nationalist leader
Pedro Albizu Campos. Soon thereafter, the leadership of the Nationalist party, including
Pedro Albizu Campos, were arrested and incarcerated for conspiracy to overthrow the government of the United States. On May 21, 1948, a bill was introduced before the
Puerto Rican Senate which would restrain the rights of the independence and nationalist movements on the
archipelago. The Senate, which at the time was controlled by the
Partido Popular Democrático (
PPD) and presided by
Luis Muñoz Marín, approved the bill. This bill, which resembled the anti-communist
Smith Act passed in the United States in 1940, became known as the
Ley de la Mordaza (
Gag Law, technically "Law 53 of 1948") when the U.S.-appointed governor of Puerto Rico,
Jesús T. Piñero, signed it into law on June 10, 1948. Under this new law it became a crime to print, publish, sell, or exhibit any material intended to paralyze or destroy the insular government; or to organize any society, group or assembly of people with a similar destructive intent. It made it illegal to sing a patriotic song, and reinforced the 1898 law that had made it illegal to display the
Flag of Puerto Rico, with anyone found guilty of disobeying the law in any way being subject to a sentence of up to ten years imprisonment, a fine of up to US$10,000 (), or both. According to Dr.
Leopoldo Figueroa, a non-PPD member of the Puerto Rico House of Representatives, the law was repressive and was in violation of the First Amendment of the
US Constitution which guarantees
Freedom of Speech. He pointed out that the law as such was a violation of the civil rights of the people of Puerto Rico. ==Nationalism==