American physician George Tiller, one of the few doctors in the country who performed late-term abortions, was shot and killed by Scott Roeder, an anti-abortion activist.
An organized mob of police and government-sponsored Sinhalese paramilitary forces began three days of attacks that led to the burning of the Jaffna Public Library (renovated building pictured) in Sri Lanka, destroying more than 97,000 items in one of the most violent 20th-century examples of ethnic biblioclasm.
World War II: German forces dropped four bombs on neutral Ireland, killing 28 people and damaging Áras an Uachtaráin, the residence of the President of Ireland.
American Civil War: Confederate troops under Joseph E. Johnston and G. W. Smith engaged Union forces under George B. McClellan at the Battle of Seven Pines outside Richmond, Virginia.
American Revolution: The Committee of Safety of Mecklenburg County, North Carolina, adopted the Mecklenburg Resolves, which annulled and vacated all laws originating from the authority of the king or the Parliament of Great Britain.