Got it, we need to have decoy store owners, looking old and fragile, standing in front of some store. Behind them should lurk out of sight two or three armed with 870s with 3in 00 buck shot. Once they assault the old looking decoy, unload on them and anyone within range. Just like the old “assassination” squad in the NYPD which used to stake out liquor stores. All they got to say is “april fool MF” and fire away.
I’m not a shotgun guy, but I’m in love with this ammo: https://www.theboxotruth.com/the-box-o-truth-56-federal-flight-control-1-buckshot/
Put a red dot sight on your shotgun, and you can hit the terrorist with all 15 pellets in a tight group without touching the productive American next to him. That will “stop the threat”.