ST. LOUIS   •   If the current national gun debate is a politically dangerous topic in some places, it's clearly not viewed that way in St. Louis, where Mayor Francis Slay is scheduled to speak at a gun-control rally downtown on Saturday — three days before standing for re-election Tuesday.

The St. Louis chapter of Moms Demand Action for Gun Sense in America is organizing the event at 11 a.m. at Kiener Plaza, 500 Pine St.

The group is part of a national coalition that's calling for 10-round limits on ammunition magazines, universal background checks and other restrictions in the wake of the Newtown, Conn., massacre of 20 elementary school students and six teachers in December.

The massacre initially prompted a juggernaut movement toward new gun control measures, with major push-back from the NRA. More recently, gun-control advocates have worried aloud that momentum for major legislation has begun to stall. President Barack Obama and others have spoken out in recent days trying to keep it going.

In addition to Slay, Saturday's rally will feature St. Louis Police Chief Sam Dotson, Clayton Mayor Linda Goldstein, University City Mayor Shelley Welsch and others.

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Kevin McDermott is a reporter for the St. Louis Post-Dispatch.