Mail Bombs Rocked American Politics a Century Ago. Here’s What a Historian Thinks That Moment Has to Teach Us

After a week during which 13 packages containing explosive devices were intercepted on their way to prominent figures associated with the Democratic Party, authorities arrested suspect Cesar Sayoc on Friday. Although the apprehension may lead to some answers, authorities have warned that more mail bombs could still be working their way through the postal system, and the questions and anxiety that filled many Americans' minds this week are unlikely to have abated.