It is horrible to see these traumatic and negative events happening all over the world. I would consider roleplaying a response to this as slightly disrespectful, where I feel that an Out Of Character prayer or memorial of sorts would suffice better, even so during a community meeting have a few moments of silence. I just think that having the traumatic event dignified in game can lead to disrespect from players and it's better to keep it out of character imo.
My thoughts are with anybody affected by the disaster. #PrayForManchester