“Guns and Mothers” follows two mothers--- activists on the two sides of the gun-control debate---as they make their cases in the year following the 2000 Million Mom March in Washington, D.C. That was where Frances Davis of Brooklyn could be found. Davis lost her three sons to gun violence. Across the Mall at a counter rally that Mother's Day was Maria Heil of rural New Freedom, Pa., a spokeswoman for the NRA-affiliated Second Amendment Sisters. The two are not seen together, but if they had been, it's unlikely that they would have found common ground. Says New York Times reporter Fox Butterfield, who's also interviewed throuhout the hour: “There appears to be no middle ground.”