I arrived in the US from Kingston, Jamaica in the summer of '68. My family of six crammed into a small, two-bedroom apartment in a three-story walkup in Brooklyn. The block had several children -- some spoke Spanish, some spoke English. Initially, I wasn't allowed to play with them because my parents said, "Them too rambunctious" -- (Laughter) so I could only watch them from my window. Rollerskating was one of their favorite activities. They loved hitching a ride at the back of the city bus, letting go of the rear bumper as the bus arrived at the bottom of the block right in front of my building. One day there was a new girl with them. I heard the usual squeals of laughter interspersed with, "Mira, mira! Mira, mira!" Spanish for, "Look, look!" The group grabbed onto the back of the bus at the top of the block, and as they rolled down laughing and screaming, "Mira, mira, mira" the bus abruptly stopped. The experienced riders adjusted and quickly let go, but the new girl lurched back and fell onto the pavement. She didn't move. The adults outside ran to help her. The bus driver came out to see what had happened and call for an ambulance. There was blood coming from her head. She didn't open her eyes. We waited for the ambulance, and waited, and never once said, "Where is the ambulance? Where is the ambulance?" The police finally arrived. An older black American said, "Ain't no ambulance coming." He said it again loudly to the cop: "You know ain't no ambulance coming. They never send no ambulance here." The cop looked at my neighbors who were getting frustrated, lifted the girl into the patrol car and left. I was 10 years old at the time. I knew this wasn't right. I knew that there was something more we could do. Something I could do was become a doctor. I became an internest and committed my career to caring for those we often call the underserved, the vulnerable, like those neighbors I had when I first immigrated to America. During my early training years in Harlem in the 80's, I saw a shocking increase in young men with HIV.