"First they came ..." is a famous statement and provocative poem written by Pastor Martin Niemöller (1892–1984) about the cowardice of German intellectuals following the Nazi's rise to power and the subsequent purging of their chosen targets, group after group. Sourced from here.
First they came for the Socialists, and I did not speak out—
Because I was not a Socialist.
Then they came for the Trade Unionists, and I did not speak out—
Because I was not a Trade Unionist.
Then they came for the Jews, and I did not speak out—
Because I was not a Jew.
Then they came for me—and there was no one left to speak for me.