In response, opposing whites swelled the ranks of the White Citizens' Council, the membership of which doubled in the course of the system with the boycott. The councils from time to time resorted to violence: King's and Abernathy's residences were being firebombed, as were being 4 black Baptist church buildings. https://britedirectory.com/listings12758613/the-definitive-guide-to-boykot-mu