Martin Luther King wrote these words from the Birmingham Jail in 1963:

"An injustice anywhere is a threat to justice everywhere."

Pastor Martin Niemöller recalled the Nazi terror of WWII with these words:

In Germany, they came first for the Communists,
And I didn’t speak up because I wasn’t a Communist;

And then they came for the trade unionists,
And I didn’t speak up because I wasn’t a trade unionist;

And then they came for the Jews,
And I didn’t speak up because I wasn’t a Jew;

And then . . . they came for me . . .
And by that time there was no one left to speak up.

Raising our voices against injustice may be the most important thing we do.