As I mentioned at the time, I couldn’t properly source the quote I shared in my sermon last Sunday. Here’s a similar quote that I can properly source:
We must always take sides. Neutrality helps the oppressor, never the victim. Silence encourages the tormentor, never the tormented. Sometimes we must interfere. — Elie Wiesel 
 Elie Wiesel, “1986 Acceptance Speech,” Nobelprize.org, accessed August 18, 2017, https://www.nobelprize.org/nobel_prizes/peace/laureates/1986/wiesel-acceptance_en.html.