Every year Errol Louis, columnist for the Daily News, chooses a community activists he feels should be lauded for their work. Today he is joined by Melvin Blackman, creator of Urban Drug Recovery program and author of Self-Published, Urban Suicide: The Enemy We Choose Not to See, Omar Freilla, founder, Green Worker Cooperatives (Bronx), and Agnes Rivera , resident of Wagner Houses in Manhattan and member and leader at Community Voices Heard, a low-income activist, who he picked this year.