Two police officers at the center of a racism scandal in Clark Township are suing to keep their jobs, though they were caught on tape using racial slurs that included the n-word. Police Chief Pedro Matos and Internal Affairs Sgt. Joseph Teston have been on paid leave since 2020, and state prosecutors have recommended they be fired, saying they violated the public trust and should never work as cops again. But in lawsuits filed last month in Superior Court in Union County, the embattled officers claim the much-delayed investigation against them took too long and violated procedural safeguards r…