A suicide bomber (i.e., a guy wearing an explosive device around his midsection) murdered at least 22 youths last night at the end of an Ariana Grande concert in Manchester. This is our world, our climate, the times we’re living in. Instant death at any moment, around any corner. The usual assumptions about the perpetrator[s] will probably turn out to be true. Yes, a familiar feeling, but for the friends and parents of those 22 (probably mostly teenage girls) the episode has brought fresh horror and incalculable grief.