Chicago Tribune: The lot where Isaac Wright Jr., ex-con, tends vegetables next to abandoned railroad tracks and across the street from a boarded-up house is the intersection of social justice, environmental righteousness and economic prosperity. He is part foot soldier, part guinea pig in a movement that starts in the Englewood garden and may reach all the way to the Oval Office, although he may not fully appreciate it. “I’m not going to lie to you,” Wright said one crisp morning while working a row …