(FORTUNE Magazine) – The Michigan Department of Civil Rights says a theater chain is guilty of illegal age discrimination . . . The department announced . . . it was filing charges against Norwest Theater Co. of Southfield, operator of the Metro Mercury and Metro Norwest Theaters in Detroit . . . The two . . . theaters bar children under 4 at all times . . . The Civil Rights Commission will hold a hearing on the charges . . . -- From a news report in the Chicago Tribune.