In January 1933, when Adolf Hitler became Chancellor of Germany, he began to close church-affiliated schools and started a campaign to discredit the religious orders in Germany. Mayer spoke out against this persecution from the pulpit of St. Michael's in downtown Munich and because he was a powerful influence in the city, the Nazis could not tolerate such a force to oppose them. On 16 May 1937, the Gestapo ordered Mayer to stop speaking in public which he obeyed, but he continued to preach in church.[3]