| May 19, 1934 10,000 participated in a “No More War” march in New York City. |
| May 19, 1952 Playwright and activist Lillian Hellman advised the U.S. House Committee on Un-American Activities (HUAC) that she refused to testify against friends and associates, saying, “I cannot and will not cut my conscience to fit this year’s fashions.”  Lillian Hellman Learn more about Lillian Hellman Text of her letter to HUAC |
| May 19, 1997 Two international human rights workers, Mario Calderón and Elsa Alvarado, as well as her father, were shot dead in Bogotá, Colombia, by a paramilitary gang. Their one-year-old was hidden and thus spared, her mother wounded. The couple worked for the Center for Investigation and Popular Education (Centro de Investigación y Educación Popular, or CINEP), a non-governmental organization founded by the Jesuits (the Roman Catholic Society of Jesus) to foster education, understanding, justice and sustainable development in Colombia.  Mario Calderón and Elsa Alvarado CINEP’s peace program |
https://www.peacebuttons.info/E-News/peacehistorymay.htm#may19
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