Mar. 30. 1282: Sicilian Vespers Massacre: Sicilians launch a successful revolt against the French occupation with a riot at a Palermo church, killing 2000 on the first day. 1870: African-American men win the right to vote. Poll taxes and ridiculous literacy tests to subvert the 15th Amendment of the US Constitution soon follow.

Mar. 31. 1840: Ten-hour workday established for federal public works employees. 1924: Gandhi begins nonviolent campaign for temple entry, Vykom, India.

Apr. 1. 1841: Brook Farm, history's most famous utopian community, is founded near West Roxbury, Mass. Its primary appeal was to young Bostonians who shrink from the materialism of American life, and the community was a refuge for dozens of transcendentalists, including Ralph Waldo Emerson and Nathanial Hawthorne. 1849: Revolution breaks out in Genoa, Italy.

Apr. 2. 1792: First US mint established in Philadelphia. 1967: Two thousand people barricade three blocks of Haight Street in San Francisco to sing, dance, and blow bubbles.

Apr. 3. 1789: A Boston trader visits and describes Neah Bay, a principal village of the Makah. 1972: Pioneering African-American congressman Adam Clayton Powell dies, Harlem, New York City.

Apr. 4. 1914: Unemployed riot in Union Square, New York City. 1967: Martin Luther King, Jr., urges a boycott of the Vietnam War through conscientious objection.

Apr. 5. 1930: Gandhi's march to the sea begins, India. 1982: Nuclear free zone declared by city of Dublin, Ireland.

Apr. 6. 1882: Birth of Rose Schneiderman, organizer of the International Ladies Garment Workers Union. 1903: General strike begins, Holland.

Apr. 7. 1772: Birth of Utopian socialist Charles Fourier, Besancon, France. 1927: First televised political demonstration occurs. The revolution, however, is not televised.

Apr. 8. 563 BC: Birth of Gautama Siddhartha, Buddha; Kapalivastu, India. 1937: United Auto Workers (UAW) strike at General Motors plant in Oshawa, Ontario, for recognition.

Apr. 9. 1877: Birth of Louis Rimbault, French anarchist and vegetarian. 1942: Norwegian teachers returning from strike publicly reject Nazification.

Apr. 10. 1930: Birth of Dolores Huerta, prominent Chicana labor activist. 1955: Death of Jessie Wallace Hughan, founder of War Resisters League.

Apr. 11. 1865: Birth of Mary Ovington, co-founder of NAACP. 1910: Emma Goldman arrested in Cheyenne, Wyo., while conducting an open-air meeting. The arrests spur further interest in Goldman.

Apr. 12. 1893: Ozette Indian reservation established on Olympic Peninsula coast. Later becomes the only reservation in the country inside a National Park (in this case, Olympic National Park). 1935: Sixty thousand college students around the US go on strike against war.