Ohio National Guardsmen shot and killed four Kent State University students.
27th May 1703: The foundation of St Petersburg by Tsar Peter the Great
27th May 2017
Tensions between university students and the locals of Oxford had been building for some time before violence broke out.
Einstein, who was Jewish, was undertaking a visiting professorship at the California Institute of Technology in Pasadena when Adolf Hitler was appointed Chancellor on 30 January 1933.
11th November 1918: WW1 Armistice of Compiègne is signed
11th November 2018
9th November 1989: East Germany opens the Berlin Wall
9th November 2017