On June 14, as Minnesota police sought a man who allegedly murdered a state lawmaker and her husband and shot another and his wife, I was working security in front of an Arizona synagogue, wearing body armour and packing a pistol and pepper spray. As they arrived, members of the congregation, worried by a recent Molotov cocktail attack on Jews in Boulder, Colo., the double murder at the Jewish museum in Washington, D.C. and tensions over the war between Israel and Iran, thanked me for accepting the rabbi’s request to help out. Well, of course; my wife was inside. Adding to fears were the “No Kings” protests — some of which turned into riots — scheduled that day nationwide.