Videos Lloyd Ultan is the Official Bronx Historian, so I'd expect nothing short of a thorough knowledge of hip hop history. pic.twitter.com/uKEtPbtrkv — Mayor Bill de Blasio (@NYCMayor) May 26, 2017 https://youtu.be/gWzkpF-797whttps://youtu.be/eH00f6pEUNEhttps://youtu.be/He0zTH4J_yghttps://youtu.be/ksLnAsIjvzkhttps://youtu.be/NnsLli6qnVkhttps://youtu.be/zp_-gkwmo90https://youtu.be/xpWRfpp_wY8https://youtu.be/UpzO_g2nblQhttps://youtu.be/340DGp4M03Uhttps://youtu.be/8U7isydmsechttps://youtu.be/HfRNf46tK9chttps://youtu.be/l2JzNFR5PJMhttps://youtu.be/_A6iPbVBtTY