How did distinct groups handle their differences with one another?

Toward the end of This Is an Uprising, Mark and Paul Engler propose that social movement
efforts with different methods for organizing can work together in an “ecology of change.” They
write, “When mass mobilizations, established organizations, and alternative communities see
themselves as complementary, they can create a movement ecosystem that allows diverse
approaches to promoting change to flourish.” Explain what they mean by this? What do you
think of this idea? Can you think of examples of healthy social movement ecosystems? How
did distinct groups handle their differences with one another?