On September 17, 1922, the
Puerto Rican Nationalist Party was formed.
José Coll y Cuchí, a former member of the Union Party, was elected its first president. He wanted radical changes within the economy and social welfare programs of Puerto Rico. In 1924,
Pedro Albizu Campos, a
lawyer, joined the party and was named its vice president. Albizu Campos was the first Puerto Rican graduate of Harvard Law School. He had served as a
Second Lieutenant in the
U.S. Army during World War I, and believed that Puerto Rico should be an independent nation - even if that required an armed confrontation. By 1930, Coll y Cuchí departed from the party because of his disagreements with Albizu Campos as to how the party should be run. On May 11, 1930, Albizu Campos was elected president of the Nationalist Party. In the 1930s, the United States-appointed governor of Puerto Rico,
Blanton Winship, and police colonel Riggs applied harsh repressive measures against the Nationalist Party. In 1936, Albizu Campos and the leaders of the party were arrested and jailed at the
La Princesa prison in
San Juan, and later sent to the Federal Prison at
Atlanta, Georgia. On March 21, 1937, the Nationalists held a parade in
Ponce and the police opened fire on the crowd, in what was to become known as the
Ponce massacre. Albizu Campos returned to Puerto Rico on December 15, 1947 after spending 10 years in prison. 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 island. The Senate, controlled by the
Partido Popular Democrático (
PPD) and presided by
Luis Muñoz Marín, approved the bill that day. 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) 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 would be 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, member of the
Partido Estadista Puertorriqueño (Puerto Rican Statehood Party) and the only member of the Puerto Rico House of Representatives who did not belong to the PPD, 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. On June 21, 1948, Albizu Campos gave a speech in the town of
Manatí where Nationalists from all over the island had gathered, in case the police attempted to arrest him. ==The Ponce massacre==