President Obama gives the commencement speech at historically black college . The president says African - Americans have ` ` no time for excuses '' if they want success . I will not be thinking about a policy I promoted . An alum who has criticized Obama for doing too little for blacks spoke Saturday . Police interrupt Sunday ceremony .
President Obama gives the commencement speech at historically black college . The president says African - Americans have ` ` no time for excuses '' if they want success . An alum who has criticized Obama for doing too little for blacks spoke Saturday . Police interrupt Sunday ceremony .