Dukakis was badly damaged by the Republicans' campaign commercials, including "Boston Harbor", which attacked his failure to clean up environmental pollution in the harbor, and especially by two commercials that were accused of being racially charged, "Revolving Door" and "Weekend Passes" (also known as "Willie Horton"), that portrayed him as "soft on crime". Dukakis was a strong supporter of Massachusetts's prison furlough program, which had begun before he was governor. As governor, Dukakis vetoed a 1976 plan to bar inmates convicted of first-degree murder from the furlough program. In 1986, the program had resulted in the release of convicted murderer Willie Horton, an African American man who committed a rape and assault in Maryland while out on furlough.