Dion Jackson, radio personality and booster of Chicago hip hop talent, dies at 51

A few weeks after Dion Jackson was born, the sleeping infant was on his mother's bed when she left for a moment to run to the bathroom. When she returned, the baby was dangling from the side of the bed, gripping the sheets with both hands. "He was holding on for dear life, and for me to see that, how tight he was holding on, I knew he was going to be something," said his mother, Connie Jackson. Similar derring-do was on display a few decades later when Mr. Jackson, then known as Chicago radio…