Did he "speak out"? Did Oskar Schindler "speak out"? You don't orate with a microphone from your balcony when you've got hunted families crouching in your kitchen.
Oh ye of little faith...God would never have allowed any manmade government to destroy Jews & Christians. Did Jesus tell the apostles to remain mum during times of persecution, or did he tell them to go out to faraway lands and preach? BTW, there are numerous historical documents and photographs documenting Catholic support of the Nazi party. Nevermind the truth, though.
http://emperors-clothes.com/vatican/cpix.htm