Religious opponents of D&D committed fraud left and right to get people to listen to them, using fractured quotations with a lot of ellipsis (...) to make it seem as if the PLAYERS worshipped gods and stuff. The fans could easily be victimized by media and groups from the religious right -- when they were teen-agers. But now, we have grown, we are part of society and even run things to some small extent (especially the computers, lol). Unlike the South, these religious opponents will never rise again. The earliest opponent of D&D I can trace is the Rev. R.A. Cotter, who wrote a nonsense article.
Information on the "controversy" can be obtained from:
http://www.rpg.net/realm/critique/gama.html (Questions and Answers about Role-Playing Games, 1991 the Game Manufacturers' Association)
http://www.rpg.net/realm/critique/gama.html (The Pulling Report, 1990 by Michael Stackpole; examines the issue with reference to a particular anti-game crusader Patricia Pulling, now deceased.)
Wikipedia on Controversy on Dungeons & Dragons has other articles including references to articles in the peer-reviewed, legitimate psychology journals. We are not mentally deviant, basically.