A loud boom cut through the night and a stream of fire lit up the sky. A strong, unpleasant odor settled over the street. None of the neighbors reported what happened that night - nor the ... symptoms that followed. For [Joseph] Gaines, the symptoms included an intense sudden headache, tearing eyes, a runny nose, and congestion. A block and a half from Gaines's house, the street ends in an Exxon Mobil refinery that ... releases at least 135 toxic chemicals, many of which - including 1,3-butadiene, benzo[a]pyrene, and styrene - are carcinogens. The plant is regularly in noncompliance with the Clean Air Act. Yet many of the people [in] Charlton-Pollard said they felt there was no point in trying to reduce the emissions. They raised [their concerns] in a formal complaint to the Environmental Protection Agency 17 years ago. The filing [described] the chemical pollution. And the complaint went further, arguing that the location of the oil refinery - next to a neighborhood where 95 percent of residents were African-American - was a civil rights violation. The majority of civil rights complaints the EPA accepted for investigation between 1996 and 2013 languished for years. As the people of Charlton-Pollard and Flint - as well as Tallassee, Alabama; Pittsburg, California; and Chaves County, New Mexico - can attest, the EPA's lack of responsiveness to civil rights complaints spans not just many years, but also several presidential administrations. While pollution protections are moving backward, Exxon Mobil is planning to expand its Beaumont operations.