Oscar Collazo (January 20, 1914 – February 21, 1994) was one of two Puerto Rican militants of the Nationalist Party who on November 1, 1950, attempted to assassinate U.S. President Harry S. Truman in Washington, DC. He had been living in New York City after growing up in Puerto Rico. Collazo was convicted and sentenced to death, but Truman commuted his sentence to life imprisonment. In 1979 Collazo's sentence was commuted to time served by President Jimmy Carter. He was paroled and allowed to return to Puerto Rico. Background Oscar Collazo López was born in what is now Florida, Puerto Rico. In 1920, Collazo's father died and his mother sent him to live with his brother in Jayuya. His brother was a member of the Liberal Party which had independence beliefs. When Collazo was 14 years old, he participated in a student demonstration, which the government had made illegal, commemorating the birth of José de Diego, a known advocate for Puerto Rican independence who had died two years before. Career Puerto Rico In 1932, when Collazo was 18 years old, he participated in another demonstration commemorating José de Diego. This time the main speaker was Pedro Albizu Campos, the president of the Puerto Rican Nationalist Party. That day Collazo was so impressed by Albizu Campos' leadership that he joined the Nationalist Party and devoted himself to it. Collazo heard Albizu talk about the abuses of American imperialism, as symbolized by Cornelius P. Rhoads, an American doctor who had written a controversial letter claiming to have killed Puerto Ricans in experiments. Outraged, Albizu had complained to the governor and gained an investigation. Rhoads was eventually cleared of any crime. New York In 1941, Collazo moved to New York City, which had a large Puerto Rican community. There he met and married Rosa Cortez, a divorcee. The couple had a total of three daughters from previous marriages: Rosa with two and Collazo with one. He worked in a metal polishing factory and led a normal family life. He met and became friends with Albizu Campos when the latter was hospitalized for a time at the Columbus Hospital. Collazo had become the secretary and later served as president of the New York branch of the Nationalist Party. After he met Griselio Torresola in New York, the two men soon became friends. Truman assassination attempt On October 30, 1950, Torresola and Collazo learned that