From a 1944 ad for war bonds. The poetic linebreaks and capitalization are as in the original.
...
Let's put an end to the foul prejudice fanned by our
Enemies...By our obvious enemy, the goose-stepping Hun...and
Our more insidious one, the unAmerican American.When you find anyone -- yourself included -- thinking,
Speaking, acting, with racial or religious prejudice --
STOP IT!If Smith, Kelly, Cohen or Svoboda is good enough to die
For us, he's good enough to live with us...
As an equal.Be American!