What has happened to protesters in the past was that, basically, the government in 2012 put an end to a series of mass protests by changing laws, by making it possible to arrest anybody for protests, and by making basically a show of imprisoning not just protest leaders, and not specifically protest leaders, but activists, rank-and-file protest participants. That gets across the idea that anybody who joins a protest without being an organizer, without being a visible leader, risks arrest, and not risks just arrest, but years in a Russian jail.