BATON ROUGE, La. — Micah Green walked LSU’s campus alone and without a purpose. This was a walk of grief, a fruitless pursuit down tree-lined pathways and through bustling courtyards. He wandered near the student union, cut across grassy lawns, peered inside the basketball arena and then—BAM!—it hit him, and he stopped. He glared at the Tiger Stadium video board, flickering overhead, on it a message honoring LSU basketball player Wayde Sims, gunned down overnight in an act of violence caught on chilling video. “I don’t know what I was looking for on campus,” Green says. “I saw his face on that screen, and I wept to myself.