Tucson shooting victim's mother moves lawmakers with pleas for reform
Zimmmerman Guns
Credit: Connor Radnovich/Cronkite News
Chasta, Minn., Police Chief Scott Knight looks on as Emily Nottingham testifies to a panel of House Democrats considering action to curb gun violence. Nottingham's son, Gabe Zimmerman, was killed in a 2011 mass shooting in Tucson.
