Following Monday’s attack on Manchester, England concertgoers, British society is on edge. Yet this edginess isn’t so much about the terrorist threat. It’s about the fear that some Britons might turn against one another. Tuesday afternoon, I spoke with a British Muslim friend about that and other related concerns.

Kashif ‘Kash’ Mahmood (or as I call him, Kashman/Kash Bandicoot) is a small business owner from Cambridge, England. But Kash also has another job for two weeks each year. It’s an important one.