I think...

...that the ADL overestimates the impact of canonizing Pope Pius XII on the average Catholic.

ADL urges Pope to suspend Pius sainthood over Holocaust inaction

(I've often wondered by groups like this don't go after the U.S. for their policy of strict isolationism during WWII, even after the horrors of the Holocaust were coming to light, until they were directly attacked themselves. Could it be because the U.S. is currently a major supporter of Israel? Naw. They wouldn't be that unfair...)