In its 60th year, the Cleveland National Air Show is a well-known and largely beloved Labor Day tradition. But for nearly 40 years, a group of Clevelanders has protested the event. Their message? “War is not entertainment; these planes kill.” The Air Show is expected to draw more than 100,000 to Burke Lakefront Airport from Aug. 31 to Sept. 2, with additional spectators watching from parks, beaches, buildings and boats on Lake Erie. The main attractions include the Navy Blue Angels, Air Force A-10C Thunderbolt II and Marine Corps F-35B Lightning II. This year, members of the Cleveland Catholic Worker community will hold a peaceful witness outside each day of the Air Show, just as they have for decades. “What we hear as entertainment in Cleveland are the sounds of war and fear in other countries,” says Mike Fiala, a member of the Catholic Worker community who started attending the witness in 1989. “These are fighter jets painted up to look like they’re entertainment, doing these in...