Megan Wolff tapes a no-assault weapon sign on the shirt of her son Oscar, 12, during Sunday's rally at Congress Square in Portland in support of gun control laws.

Counterprotesters in orange, with signs supporting guns as saving lives, stand behind protesters supporting gun control laws during Sunday's rally at Congress Square in Portland.

Sara Gideon, Maine's House speaker a Democratic candidate for U.S. Senate, speaks during Sunday's gun control rally in Portland.

Debby Adkins of Portland shares her thoughts on a sign during Sunday's rally at Congress Square in Portland in support of gun control laws. "I was around for Kent State when our government killed people," Adkins said. "I've been supporting gun control ever since."

Shoes representing those killed by guns in Maine are placed at the foot of the stage.

Counter protesters in orange, with signs supporting guns as saving lives, stand behind protesters supporting smarter gun laws.