pigrabbitbear writes: "We all know about flash mobs. They’re those quasi-spontaneous group demonstrations or performances that quickly materialize then disperse, organized for reasons ranging from political dissidence to conceptual improv to fighting en masse with light sabers. In the United States, despite freedom of assembly laws, many states have laws forbidding so-called “incitements to riot.” But these rapid changes in the ways people organize have opened up some new, problematic territories for organizers and law enforcement."
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