Following up on a two-day report, “The Fear of Black Men in America,” NPR’s Michel Martin (formerly of, “Tell Me More”) and Gene Demby will host a Twitter chat today at 12:30 p.m. EST. Listen above to Part 2 of Martin’s report, which today tackles how African-American men feel about themselves and each other. Part 1 looked at how fear of black men manifests in the criminal justice system and the labor market.