I recently came across a reminder of a simple act of defiance that changed history. In 1517, Martin Luther tacked a document called the 95 Theses to the door of the Wittenburg Castle church. The 95 Theses questioned the foundations of the all-powerful Catholic church. Most specifically, the document challenged the church’s practice of “indulgences,” payments made by believers as a way to enter heaven. Indulgences empowered the church and enriched the church elite, mostly at the expense of the poor.