In this photo provided by Evgeny Feldman, Alexei Navalny is detained by police in downtown Moscow, Russia, Sunday, March 26, 2017. Russia's leading opposition figure Alexei Navalny and his supporters aim to hold anti-corruption demonstrations throughout Russia. But authorities are denying permission and police have warned they won't be responsible for &quot;negative consequences&quot; or unsanctioned gatherings. (Evgeny Feldman for Alexey Navalny's campaign photo via AP)