NBC Left Field: Do protest marches really work?
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By NBC Left Field
Round the world when people feel strongly, they gather together and take to the streets.
But do protest marches really work? NBC's Left Field film unit went to find out.
There are certain characteristics of effective protests claims American University Professor Jane Hall.
She said there are five ingredients for a successful march:
Leadership
Persistence
Media
Simple message
Keep momentum
Watch the video for the full report