– President Clinton signs a measure requiring neighborhood notification when sex offenders move in. Megan’s Law was named for 7-year-old Megan Kanka, who was raped and killed in 1994 by a repeat sex offender.

2000 – Thomas E. Blanton Jr. and David Luker surrender to police in Birmingham, Alabama. The two former Ku Klux Klan members were arrested on charges from the bombing of a church in 1963 that killed four young black girls.

2014 – Victor Espinoza, riding California Chrome, wins the 139th Preakness in 1:54.84. Espinoza also won the Preakness in 2002 and 2015. Watch Espinoza ride California Chrome to a win the Kentucky Derby and the Preakness:

May 18

1652 – Rhode Island enacts the first law declaring slavery illegal.

1896 – The Supreme Court affirms race separation in Plessyv Ferguson. Homer Plessy was arrested in New Orleans for sitting in a “whites only” railroad car. The Supreme Court ruled that separate facilities were constitutional as long as they are equal. Justice John Harlan was the lone dissenter on the Court.

1926 – Evangelist Aimee Semple McPherson vanishes while swimming near Venice, California. She showed up a month later in Senora, Mexico, saying she had been kidnapped. Watch a video of McPherson’s speech on prohibition:

1927 – Andrew Kehoe blows up Bath Consolidated School in Michigan, killing 38 children and 2 teachers after killing his wife and setting their home on fire. Kehoe died in a second bombing later that day aimed at the school’s superintendent.

1953 – Jacqueline Cochran is the first woman to break the sound barrier, flying