Collective disasters produce extraordinarily intense communal sharing relationships, which may be mediated by the kama muta emotion. Terrorist attacks and mass shootings evoke strong kama muta in the community and the world, often attested by vigils, tributes, ad hoc memorial sites with offerings, and offers of refuge and support on social media, such as ‘Je suis Charlie.’ Monuments such as the National September 11 Memorial and Museum and the Vietnam Veterans Memorial evoke powerful kama muta by physically connecting people with those who died. In everyday life, keepsakes, heirlooms, mementos, and photographs often evoke nostalgic kama muta. So do places and activities that remind people of those they loved.