Alfred Liggins : America 's black population has become more diverse . 40 million population from many different social , economic groups , he says . Liggins : Discrimination still key issue , but other concerns have emerged . And as insulting as it is to assume that all women vote for female candidates , it is equally inaccurate and offensive to say that blacks simply cast their ballots for people of color . He says politicians need to know that past attitudes to race are valid .
Alfred Liggins : America 's black population has become more diverse . 40 million population from many different social , economic groups , he says . Liggins : Discrimination still key issue , but other concerns have emerged . He says politicians need to know that past attitudes to race are valid .