On This Day: May 4th

Nine people are killed and thirteen injured in a spree shooting in Mladenovac and Smederevo, Serbia. It is the second mass shooting in the country in two days.

The inaugural all-female motorsport series, W Series, takes place at Hockenheimring. The race was won by Jamie Chadwick, who would go on to become the inaugural series champion.

Three people are killed and 62 injured in a pair of bombings on buses in Nairobi, Kenya.

Greensburg, Kansas is almost completely destroyed by the 2007 Greensburg tornado, a 1.7-mile wide EF5 tornado. It was the first-ever tornado to be rated with the new Enhanced Fujita scale.

One hundred three people are killed and 51 are injured in a plane crash near Mallam Aminu Kano International Airport in Kano, Nigeria.

Ken Livingstone becomes the first Mayor of London (an office separate from that of the Lord Mayor of London).

A federal judge in Sacramento, California, gives "Unabomber" Theodore Kaczynski four life sentences plus 30 years after Kaczynski accepts a plea agreement sparing him from the death penalty.

Israeli Prime Minister Yitzhak Rabin and PLO leader Yasser Arafat sign a peace accord, granting self-rule in the Gaza Strip and Jericho.

Latvia declares independence from the Soviet Union.

Iran–Contra affair: Former White House aide Oliver North is convicted of three crimes and acquitted of nine other charges; the convictions are later overturned on appeal.