A social networking system creates and manages dynamic social circles corresponding to real world social events where multiple people join in an event. The social networking system has stored conditions that, when met, for creating, closing, and deleting a social circle, and also determines which users are part of the social circle and for what time periods. Assets, such as photos, URLs, media selections, etc. that are used by members of the social circle during the event are recorded by the social networking system and access to those assets are selectively provided to members of the social circle. A social circle might be automatically opened when users congregate. A social circle closes when the event is over. Once closed, the assets might not change but continue to be available to members until the social circle is deleted. The social networking system might be a central system or a distributed system.
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