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What happened today (April 4) in history? Key events to look back on

What happened on April 4 in history? Key events include Martin Luther King Jr.’s assassination, NATO treaty signing and more.

By Surjosnata Chatterjee

Apr 04, 2026 08:11 IST

Some dates echo through history for their political turning points, cultural milestones, and moments that reshaped societies. April 4 is one such day, marked by events that continue to influence global memory and discourse. Here’s a look at some of the key events associated with this day.

Martin Luther King Jr. assassinated (1968)

On April 4, 1968, civil rights leader Martin Luther King Jr. was assassinated in Memphis, Tennessee. King was a central figure in the American civil rights movement, known for advocating non-violent resistance. His death sparked widespread grief and unrest across the United States.

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NATO treaty signed (1949)

On this day in 1949, the North Atlantic Treaty was signed, leading to the formation of NATO. The alliance was created as a collective defence arrangement among Western nations during the early years of the Cold War.

Microsoft founded (1975)

Tech giant Microsoft was founded on April 4, 1975, by Bill Gates and Paul Allen. The company would go on to become one of the most influential forces in personal computing and software development.

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International Day for Mine Awareness observed (2006 onward)

The United Nations observes April 4 as the International Day for Mine Awareness and Assistance in Mine Action. The day highlights the dangers of landmines and the need for efforts to clear them, especially in conflict-affected regions.

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