Hip Hop vs. The Harlem Renaissance - What's your take?

When Hip Hop arrived on the scene back in the early 1980s, there was a slow response from the radio stations but the people on the streets were loving the new vibe and concept of rap music. Rap music started out talking about light-hearted situations that happen on an everyday basis. Not until the mid to late 80s is when rap music switch gears and became political awareness and protest message. Society does not classify rapping and/or rappers as a form of art but there are some rappers that would definitely qualify (i.e. Common, Tupac Shakur, KRS One, Mos Def, Public Enemy, Arrested Development, etc.)
However, the artists of the Harlem Renaissance period started out and maintain its stand against the racial and political injustice against black people. This was their sounding board and they sounded off very loud and did it well.