A group of clergy members wanted to change the conversation when they heard that a Florida police department was using mug shots of young black men as targets for shooting practice. “#UseMeInstead,” the religious leaders said, tweeting photos of themselves in hopes that their solidarity would cause cops to “think twice” before pulling the trigger. But the well-intentioned hashtag is provoking mixed responses. It wasn’t long before Broderick Greer, a 24-year-old student at Virginia Theological Seminary, noticed something about the pictures showing up under #UseMeInstead. Most of the participants were white. “I’m conflicted.