Complex sentence: Following several unsuccessful attempts to reclaim his $70,000 share of the original heist, Porter shoots one of the Outfit's top men, Carter, and kidnaps Johnny, the son of Bronson, the Outfit's head.
Split into simpler sentences: Following several unsuccessful attempts to reclaim his $70,000, Porter shoots one of the Outfit's top men, Carter. He then kidnaps Johnny, the son of Bronson, the Outfit's head.