Maybe you ought to list the Catholic SS death camp commanders first. You can strike Hoess (Auschwitz) off your list, because he says in his autobiography that he ceased to be a Catholic in the 1920's.
So...you find one lapsed catholic and you think to suggest the catholic church is off the hook in this matter? Fat chance. The catholic church is perfectly capable of condemning classes of people due to their actions through excommunication. Hence the popes capacity to excommunicate all communists.