Mayors Against Illegal Guns participants hold event in Norristown on Thursday

Kelly 1A demonstrator waves an inverted American flag, with the original 13-star design, during a press conference led by Mayors Against Illegal Guns outside the Montgomery County Courthouse in Norristown, PA, on Thursday. Photographs by Tom Kelly for the Gun Crisis Reporting Project.

Kelly 2rMore than 100 events were planned across the country as part of the National Day to Demand Action to end gun violence.

Waving an inverted flag is a traditional signal of distress.

Kelly 3

More reports: Montco authorities rally to end gun violence on Day to Demand Action National Day to Demand Action comes to local level in Norristown Supporters, opponents of gun control rally in Montco Norristown to participate in National Day to Demand Action