BY KAYLA JOHNSON URBAN HEALTH MEDIA PROJECT PHILADELPHIA — Before he was out of his teens, Waltkeem Jenkins had been jumped and shot at and was diagnosed with depression. At the age of 19, Jenkins, now 23, missed a bus he usually took to get home after performing music at an open mic night at a theater in Germantown. While walking home, alone and in the dark, he noticed a group of men following him. After turning and confronting them, one of the men pulled a gun and pointed i