The whole issue of the dangers with role-playing games was really sorted out years ago. However, after the recent high school shootings it has made a small reappearance. At it's height during the 1980's the anti role-playing game movement was figure-headed by two people: Patricia Pulling and Dr. Thomas Radecki.
Today, it seems that only a small number of conservative Christians still feel (and occasionally campaign) that role-playing games are dangerous.