WIST

First they came for the Jews. I was silent. I was not a Jew. Then they came for the Communists. I was silent. I was not a Communist. Then they came for the trade unionists. I was silent. I was not a trade unionist. Then they came for me. There was no one left to speak for me.

Martin Niemöller (1892-1984) German theologian and pastor
(Attributed)
One of several versions attributed to him.

Whoever wants peace must want to live together with their opponents. We have to risk trusting each other. There stop the arms race.

[Wer den Frieden will, muß mit dem Gegner gemeinsam leben wollen. Wir müssen vertrauen wagen. Darum Schluss mit dem Rüsten.]

Martin Niemöller (1892-1984) German theologian and pastor
1980s anti-war poster