Reply To: OU = MO? Home › Forums › Controversial Topics › OU = MO? › Reply To: OU = MO? March 31, 2015 12:00 pm at 12:00 pm #1070669 simcha613Participant Didn’t R’ Shach oppose Chabad very strongly? Didn’t the Gra oppose Chassiudus? When do we write off entire sects of Judaism because some Gedolim oppose them?