This is the "First they came..." poem attributed to Martin Niemoeller at the Holocaust memorial in Boston MA, USA
<p>Martin Niemoeller<br></p>
(Life time: 14 January 1892 – 6 March 1984)
<p><b>Original publication</b>: <a class="external free" href="https://en.wikipedia.org/wiki/First_they_came_">https://en.wikipedia.org/wiki/First_they_came_</a>...<br></p>
<b>Immediate source</b>: <a class="external free" href="https://en.wikipedia.org/wiki/First_they_came_">https://en.wikipedia.org/wiki/First_they_came_</a>...