Read and learn about history. Pick out a good one for us.

https://en.wikipedia.org/wiki/April_3

• 1956 – Hudsonville–Standale tornado: The western half of the Lower Peninsula of Michigan is struck by a deadly F5 tornado.
• 1968 – Martin Luther King Jr. delivers his "I've Been to the Mountaintop" speech. He was assassinated the next day.
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• 1974 – The 1974 Super Outbreak occurs, the second biggest tornado outbreak in recorded history (after the 2011 Super Outbreak). The death toll is 315, with nearly 5,500 injured.
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• 1975 – Bobby Fischer refuses to play in a chess match against Anatoly Karpov, giving Karpov the title of World Champion by default.

1996 – Suspected "Unabomber" Theodore Kaczynski is captured at his Montana cabin in the United States.