You really don't want to go there. I have no problem with most of Protestantism and have dear friends and family members who are Protestant. I do accept that there are doctrinal issues and that there have been excesses by bad apples within the Church over time.
My problem is with those who masquerade as Christians and exist here in cyberspace only to vilify the Church. Those need to be identified and countered with the truth. When fellow Protestants begin to call them out and address the excessive statements, the flame bait and outright lies I will begin to believe this Kumbya thing.
And for the record it was the primarily the members of the Protestant Reichkirche loading Catholics and Jews into the cattle cars. It is estimated that as many as 8 million Catholics were killed in the Holocaust. In Poland alone there were 3 million Catholics and a significant percentage of their clergy killed by the Nazi's. As bad as that seems it pales in comparison the the numbers of Catholics killed within Britain and Ireland in the last 500 years for Catholic.