Are the women-led protests in Iran powerful enough to force change when past attempts have failed? On this week’s On the Media, a look at the moments that ignite movements, both online and in the streets. Plus, how silly videos built one of the largest media companies in the world, and the story of how one Twitch streamer successfully took down an army of harassers.

1. Fatemeh Shams [@ShazzShams], poet and professor of Persian literature at the University of Pennsylvania, on how the recent wave of protests in Iran differs from previous movements. Listen.

2. Ben Collins [@oneunderscore__], senior reporter for NBC, on how a famous Twitch streamer got an online forum taken down. Listen.

3. Mark Bergen [@mhbergen], journalist and author of Like, Comment, Subscribe: Inside YouTube’s Chaotic Rise to World Domination, on how YouTube transformed from a dating site to an essential part of society. Listen.

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