Know-Nothings, Bible Riots and the Catholic Church Take a break from priest abuse news with this detailed history of anti-Catholic bias in the United States. In 1834, an angry Boston mob burned down a convent after Harriet Beecher Stowe's father preached that Catholic immigrants were a threat to democracy. In Philadelphia, the 1844 Bible Riots lasted for days, destroying Irish-Catholic churches and neighborhoods. In 1855, Louisville Know-Nothings went on a "Bloody Monday" rampage that left dozens of Catholics dead. Even telegraph inventor Samuel Morse got into the act with a series of anonymous anti-Catholic letters. Fascinating stuff, but oops, break's over. We now return to our regularly scheduled program.