Russian Police Detain Opposition Leader Navalny Ahead of ProtestSavePrintDemonstrators shout slogans during an anti-corruption protest in central St. Petersburg, Russia on June 12, 2017. REUTERS/Anton VaganovReuters6/12/2017|Updated: 6/12/2017Riot police detain a man dressed in a t-shirt depicting opposition leader Alexei Navalny, during the Navalny-led anti-corruption protest in central Moscow, Russia on June 12, 2017. REUTERS/Tatyana MakeyevaWe had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.