Two years ago, former Black Flag frontman Henry Rollins dished on the power and limitations of music in his Big Think interview:

"Is music a viable force for change?  Can music stop things, start things, change things?  To a certain degree yes, maybe in pop culture, but if a song or an artist could stop a war Bob Dylan and Bob Marley would have."

You can watch the clip below, in which Rollins explains that it takes a lot more than one artist to spark a revolution: