First they came for the communists, and I didn't speak out because I wasn't a communist. Then they came for the trade unionists, and I didn't speak out because I wasn't a trade unionist. Then they came for the Jews, and I didn't speak out because I wasn't a Jew. Then they came for the Catholics, and I didn't speak out because I was Protestant. Then they came for me, and there was no one left to speak out for me.
- Pastor Martin Niemöller (1892–1984)