Yes, the two terrible Kennedy assassinations were carried out by (1) communist (though NOT “new leftist”) Lee Harvey Oswald, who was carrying out his own version of neo-Stalinist activism even if he was not under KGB operational control; (2) Palestinian fanatic Sirhan Sirhan, who murdered Bobby Kennedy for his sympathy toward Israel.
How ironic that liberals were able to misuse these assassinations, not to wage war against communists and anti-Israel fanatics, but to support the lurch leftward of the Demagogic Party.
Given all that has taken place since 1963, and my impressions at the time, I will never cease believing that the assassination of JFK was caused precisely by that lurch leftward within his own party - and the left's embrace of FDR's manipulation of information.
RFK's assassination was a foretaste of what we've reaped by underestimating the pathology that deforms the middle east - and the left's embrace of those infected most by that pathology.