For me, it was learning about The 16 Carmelite nuns of Compiègne, who were martyred by guillotine in Paris on July 17, 1794, during the French Revolution's Reign of Terror for refusing to abandon their religious vows. They were aged 29 to 78 years old.
What’s a story that recently brought you to the verge of crying?
The Narrow Road to the Deep North. It's an historically-researched novel by Richard Flanagan, in the tradition of Truman Capote I guess, telling the story of prisoners of war being worked to death building railroads etc for the Imperial Japanese during WW2. Ghastly. But also told in a personally resonant manner.
In 1547, we left France for the same reason, religious persecution. But to answer your question, the last thing to make me cry, was Fredrick Douglas's response to a request for a 4th of July Speech. What goes around comes around.