The exact text of what Martin Niemoller said, and which appears in the Congressional Record, October 14, 1968, page 31636 is:
"When Hitler attacked the Jews, I was not a Jew, therefore I was not concerned. And when Hitler attacked the Catholics, I was not a Catholic, and therefore, I was not concerned. And when Hitler attacked the unions and the industrialists, I was not a member of the unions and I was not concerned. Then Hitler attacked me and the Protestant church -- and there was nobody left to be concerned."