Gabrielle Giffords

DANBURY, Conn., Jan 15- Gun-control advocates, including the mothers of two victims of mass shootings, gathered at a Wal-Mart store near Newtown, Connecticut, on Tuesday to call on the country's largest retailer to stop selling assault weapons.

DANBURY, Conn., Jan 15- Gun-control advocates are planning a rally outside a Walmart store near Newtown, Connecticut, on Tuesday to demand the largest U.S. retailer stop selling assault weapons.