The cancer risk for residents of Manchester and the neighboring community of Harrisburg is 22 percent higher than for the overall Houston urban area, according to a recent report from the Union of Concerned Scientists and t.e.j.a.s. While the city works to overcome its image as a dirty oil town, these neighborhoods remain solidly dominated by the petrochemical industry. And despite the work of Parras and his team, the environmental and health issues that Manchester’s residents face are not gaining enough political traction to garner real change.“Environmental justice issues become all too easy to grasp when you take people into neighborhoods,” Juan Parras said when the Sierra Club awarded him its 2015 Robert Bullard Environmental Justice Award. So Parras gives the toxic tour over and over again, hoping that, eventually, people will listen.