http://www.bbc.com/news/world-europe-41817418
4. Row over anti-Semitic carving
After Luther realised that he would not be able to convert Jews to his version of Christianity, he unleashed a tirade of anti-Semitic writings.
He argued that Jewish synagogues, schools and homes should be set on fire, that Jews should have their assets confiscated and that they should be used as forced labour and expelled.
His texts, such as On the Jews and Their Lies, were used extensively by the Nazis.
Amid ceremonies marking Luther's legacy 500 years on, there have also been protests about an anti-Semitic sculpture (Judensau) which remains on the facade of another church in Wittenberg.
There have been calls to remove the offensive stone image, which shows Jews suckling the teats of a sow as a rabbi looks intently under its leg and tail.