Last year, we spoke with two Georgia-based comic book publishers who are working to develop more superheroes of color. Carlton and Darrick Hargro are the creative force behind the comic book company, 20th Place Media . We talked to them about one of their latest comics called “Moses,” which draws connections between the African slave trade and an alien abduction. This week, we pay tribute to Martin Luther King Jr., who was killed 50 years ago. In August 1967 , King spoke in Atlanta at the annual