I went to Edinburgh as part of a special delegation from Reservists on Duty, a group of Israeli reserve combat soldiers and officers who felt it was their duty to expose and counter BDS. They were in Scotland to accompany a theatre group that had received threats prior to its tour.

We were on our way to the first day of the Fringe Festival, which is a platform for artists from all over the world to express themselves on the streets of Edinburgh. Since 2014, however, the Fringe Festival has become a nightmare for Israeli artists. It was in that year that the Israeli pop-opera play “The City” was scheduled for 29 performances, all of which sold out on the first day. But, when Palestinian-flag-waving antagonists raucously disrupted the first performance, the festival management felt compelled to cancel the remaining shows.

That didn’t stop the actors from returning this year, or from declaring, “We are Israelis, we are artists, and you will not silence us.” Reservists on Duty decided to join the delegation to ensure that the antisemitic and other radical groups...