Complex sentence: The brothers were involved with the founding of Operation Rescue and, in 1992, helped organize the "Spring of Life" in Buffalo and to focus its public demonstrations on abortionists and to close abortion clinics.
Split into simpler sentences: The brothers were involved with the founding of Operation Rescue. In 1992, they helped organize the "Spring of Life" in Buffalo in an effort to focus its public demonstrations on abortionists and on efforts to close abortion clinics.