Critics pointed out that Stowe had never been to the South, but her novel became a bestseller in the North (banned in the South) and the most effective bit of propaganda to come out of the abolitionist movement. It galvanized many who had been sitting on the sidelines.
blue law. 1. any puritanical law that forbids certain practices, especially drinking or working on Sunday, dancing, etc.
Blue is also the color of protection. Blue symbolism is nearly universal in meaning. As a result, blue is used in national flags and symbols around the world, including the flag of the United Nations.