Frame drums and a high intention. Perhaps among the most galvanizing forces in the created world.
Don't believe me?
The white slave owners of the Americas knew this. They would let their African charges play anything they wanted, but not the drum.
I only just learned about Idle No More, an advocacy group for indigenous peoples everywhere. They are capturing the hearts and spirits of local communities with their spontaneous, and perhaps even confrontational, round dances. Check them out taking over the Mall of America back in 2012:
May we be led through the permissions granted us by the Almighty Creator toward the pursuit of justice and equity for all people.