KQED – In the days since President Trump sent the National Guard and Marines to quell protests in Los Angeles, demonstrations against ICE raids have been held across the Bay Area and nationwide. This weekend’s “No Kings” protests, timed to the day of President Trump’s military parade, are expected to draw large crowds across the country. We take this moment to look back at times when protests have been successful instigators of change, and times when protests may have hurt a movement. What does it mean to have a successful protest? Who is the audience and how are they persuaded? And what should demonstrators know in this modern age of surveillance about the risks of hitting the streets and safeguards that can be taken.

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