These days it seems our highest profile art critics are politicians, from U.S. Attorney General John Ashcroft, who got his panties in a wad over a topless Spirit of Justice statue, to that most notorious art theoretician of all, Congressman Jesse Helms, who in the culture wars of the '80s branded contemporary art as bunk. Potentially Harmful: The Art of American Censorship, opening Jan. 10, offers the visual evidence that fueled a rash of controversies from the 1970s to the present and includes such bad boy and girl artists as Karen Finley, Robert Mapplethorpe and Dread Scott. Free. Opening reception: 5-8 p.m. Regular hours: Mon.-Fri., 10 a.m.-6 p.m.; Sat., noon-4 p.m. Through March 10. Ernest G. Welch School of Art & Design Gallery, 10 Peachtree Center Ave. 404-651-0489. www.gsu.edu/artgallery.