It seems that every healthy and thriving community, city, social group or ecosystem remains healthy and thriving because they can handle having a disruptive element with an important role to play.
The disruptors are the people or events that shake up the status quo, question why things are done a certain way, or introduce an element of chaos or discontent into the system and forces it to evolve, change or adapt. They are the people whose survival or well-being is not dependent on the stability of the system; revolutionary new ideas and significant change rarely come from those whose livelihoods and sense of security depend on things going along as they are.