It was the Klu Klux Klan, the whites hated them, they were murdering people and fighting the civil black right movement. He had gotten big for their eyes.

Although Joshua was outraged he vowed to do nothing to avert their attention or retaliate. He went on to build a smaller factory.
Jay and Joshua did not marry but they did have a daughter by this time of twelve years old by the name of Mary. Mary was his sister in this life.