Don't fret. Upon finding out about the nature of the victims, I rapidly concluded that old Stabby McIslam had done society a considerable favour by giving their just desserts to a couple of awful, lefty, virtue-signalling c'nts who would undoubtedly have gone on to do immeasurable harm with their revolting, wrong-headed open borders do-gooding.
Shame he didn't get a few more of the organisers of that event and disembowel the fúcker's dad into the bargain imo.
Aaaaaaaaaaaaah, it feels better to get that off my chest! Thanks, m!