The Left vs. the Right on Free Speech, 2017, Rick McKee - History Education Network

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56 years ago today- these 4 students at Kent State University in Ohio were shot and killed during a rally opposing the expanding involvement of the Vietnam War into Cambodia by US military forces, as well as protesting the National Guard presence on campus and the draft. May 4, 1970

The British battleship HMS Duke of York heading to sea on the 23 September 1948.

German Major Josef Gangl taken by an American photographer on May 4, 1945. The following day, he was killed while shielding former French Prime Minister Paul Reynaud, fighting alongside American soldiers and French prisoners against SS forces.

Caricature of Chairman Mao Zedong as a Chair man, Gerald Scarfe, 1971

Polish flag riddled with bullets in the last days of the Warsaw Uprising, 1944, Zbigniew Brym