&quot;We mourn people we feel a connection with, because of the pain we feel at losing the connection.&quot;<p>Large groups also mourn because (for lack of a better way to put it) a crowd effect. There are people who are impacted for sure but then there are people who will come along for the grief ride that really wouldn&#x27;t care if their friends didn&#x27;t drop the idea and the importance into their head. Or if there wasn&#x27;t a great deal of media coverage which stokes the grief.