NEW YORK (AP) — Opponents of the city's limit on the size of sugary drinks are raising questions of racial fairness alongside other complaints as the novel restriction faces a court test.

The NAACP's New York state branch and the Hispanic Federation have joined beverage makers and sellers in trying to stop the rule from taking effect March 12. With a hearing set Wednesday, critics are attacking what they call an inconsistent and undemocratic regulation, while city officials and health experts defend it as a pioneering and proper move to fight obesity.

The issue is complex for the minority advocates, especially given obesity rates that are higher than average among blacks and Hispanics, according to the federal Centers for Disease Control. The groups say in court papers they're concerned about the discrepancy, but the soda rule will unduly harm minority businesses and "freedom of choice in low-income communities."