<Tr> <Th> Added to NRHP </Th> <Td> February 23, 2010 </Td> </Tr> <Tr> <Th> Designated NHL </Th> <Td> December 23, 2016 </Td> </Tr> <P> The Kent State shootings (also known as the May 4 massacre or the Kent State massacre) were the shootings on May 4, 1970, of unarmed college students by members of the Ohio National Guard at Kent State University in Kent, Ohio, during a mass protest against the bombing of Cambodia by United States military forces . Twenty - eight guardsmen fired approximately 67 rounds over a period of 13 seconds, killing four students and wounding nine others, one of whom suffered permanent paralysis . </P> <P> Some of the students who were shot had been protesting against the Cambodian Campaign, which President Richard Nixon announced during a television address on April 30 of that year . Other students who were shot had been walking nearby or observing the protest from a distance . </P>

When did the kent state shooting occur and what happened
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