1. Run-DMC made the claim of being "King of Rock" back on their 2nd album of that title back in '85. They remain to be probably the most influential rap group of all time; therefore they are still the undisputed Kings of rock.
2. To add more depth and dimention to the phrase that came to define Run-DMC, "king of rock" refers to a movement in the landscape of music. Hip hop now is and forever will be the new version of rock and roll. it defines the culture, thoughts and attitudes of America's youth.
"I am the king of rock, there is none higher.
Sucker MC's should call me sire"