<Tr> <Th> Perpetrators </Th> <Td> Chicago Outfit Egan's Rats The Purple Gang </Td> </Tr> <Tr> <Th> No. of participants </Th> <Td> 4 (all unidentified) </Td> </Tr> <P> The Saint Valentine's Day Massacre is the name given to the 1929 murder in Chicago of seven men of the North Side gang during the Prohibition Era . It happened on February 14, and resulted from the struggle between the Irish American gang and the South Side Italian gang led by Al Capone to take control of organized crime in the city . Former members of the Egan's Rats gang were suspected of a significant role in the incident, assisting Capone . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2018) (Learn how and when to remove this template message) </Td> </Tr> </Table>

Who was involved in the valentine's day massacre