Complex sentence: For several years, Sharpton and Fulani publicly backed each other on some issues, but Fulani felt betrayed when in 1992 Sharpton ran for the U.S. Senate from New York as a Democrat rather than as an independent.
Split into simpler sentences: For several years, Sharpton and Fulani publicly backed each other on some issues. In 1992 Sharpton ran for the U.S. Senate from New York as a Democrat rather than as an independent.