how many years did marvin lewis lose playoff games in cincinnati?
pete carroll was 10-6, 9-7, and 8-8 with the pats and got fired. it happens, the nfl is a cut throat business.
otoh, there ARE currently a lack of black head coaches in the nfl. why? i dont know. there have been plenty in the past and there are plenty of candidates in the pipeline. i think the nfl has done some things to help that process along, including offering incentives to teams to develop black coaches through draft pick awards and requiring teams to interview black head coaches. that's a positive for the nfl.