First, the existence of cross-group organizations and partnerships among organizations originating in the separate groups, seems to be a strongly stabilizing feature of a multi-group society. The presence of a group of leaders who are committed to enhancing trust and cooperation across group lines provides an important “fire break” when conflicts arise, because these leaders and organizations already have a basis of trust with each other, and a willingness to work together to reduce tensions and suspicions across groups.
Needull in a haystack 
agreed