Never choose...

A French priest, Patrick Desbois has been gathering evidence about the massacres of Jews in Nazi-occupied Ukraine in 1941 (at that time they were simply shot). He received one piece of advice from Cardinal Decourtray:

Never choose between two Jews: too much of that was done during the war.

(My translation - see Un curé sur les traces de la "Shoah par balles", Le Monde, 3 April 2006)