In the winter of 2004, a source first told me that the Federal government had sanctioned testing an AIDS vaccine on mostly black and Latino foster children ages 1 month to late teens. I did not believe it. When finally convinced that it was true, I sobbed openly as we walked through the park. I had only the back of my hand to wipe my eyes and my nose, but I didn’t care. I was so enraged and so impotent. It was excruciating and useless to have this knowledge because …