Two months after ending his annual State of the Black Union conference, Tavis Smiley is gathering African-American advocates to press the case for a "black agenda." The decision was motivated by what Smiley called recent statements from some black leaders downplaying the need for President Barack Obama to specifically help African-Americans. "I was compelled to do it because of this debate," the activist and PBS talk show host said Wednesday. The panel discussion will be March 20 at Chicago State University. Panelists include advertising pioneer Tom Burrell, professors Michael Eric Dyson and Cornel West, Nation of Islam leader Louis Farrakhan,...