In New York the slow and low, heavy and hard school of rap found its champions in Run DMC and the emergent Def Jam label whose use of heavy metal guitars has opened up yet another field of electro-funk. Amongst the usual egotistical subject matter of most raps people like Brother D and the Collective Effort, Captain Rapp and the Kold Krew have tried to educate people politically with respectively, 'How We Gonna Make The Black Nation Rise', ‘Bad Times (I Can't Stand It)' and 'Don't Let 'Em Drop The Bomb'. Discuss the persuasive message in the passage above