Gun rights advocates in Maryland expressed frustration at being left off of a county task force that is studying ways to reduce gun violence during a meeting Thursday night, as supporters of stronger gun-control measures thanked members for their work. The Anne Arundel County Gun Violence Prevention Task Force was created in the wake of the 2018 killing of five employees at a local newspaper. The panel set aside time at the end of its meeting Thursday night for up to eight people to address the task force.