'In 1952, shortly after graduating from UVA, Kennedy got one of his first jobs thanks to an old family friend, Wisconsin Senator Joseph McCarthy. McCarthy, who had vacationed with the Kennedy family and even dated two of Bobby’s sisters, agreed to hire the young lawyer to work on his Permanent Subcommittee on Investigations examining possible communists infiltration of the U.S. government. Kennedy left six months later, after clashing with McCarthy’s brash young deputy, Roy Cohn.'

https://www.google.com/amp/s/www.history.com/.amp/news/remembering-robert-f-kenned

y