So, though I have lived full-time in Rome for less than 2 years (after a period of regular toing and froing) and don't have the largest social circle in the world, I have two friends who knew Gabriele Sandri personally. Is it just me or is that quite random? Chances are I would have met him one day. It helps that I am the same age as he was, of course.
One had worked with him for a while some 7 or 8 years ago, when my mate M was a club promoter and Sandri a hopeful young DJ. The other, A, is both ubiquitous on the clubbing circuit and has a lot of contacts among ultras of both stripes in the city; they were quite good mates. M was shocked and disconcerted by the news; A has I think been properly grieving.
It's not a very large city, of course. But I am not used to having news stories quite so close to home.