The mandatory “Star of David” badges or similar are not out of the question with the Marxists.
Back when Bill Clinton was on his anti-assault weapon Jihad, I took a yellow plastic lid from a tub of oleo and made up a badge similar to this
There were news cameras at the entrance, homing in on anyone who carried an "assault rifle". I made a point of walking alongside that person and the newsies would back off.
Inside, there was a crew with a live camera posted at the head of one of the aisles. Three times I made a point of walking directly up to the camera, only to see the red light go off.
What was really weird was that even the vendors would not make eye contact, as if I was a weirdo ready to fly off the handle. An education on may levels, to be sure.