Alexei Navalny has organized one of the largest public demonstrations against the Russian government this week, with thousands showing up.
Although Navalny was given permission to hold a demonstration, he moved the protest to another area where he did not have permission. Clashes with police followed.
Navalny sent out a video message at night telling his supporters to go to the location near Red Square and to "go nowhere else." Navalny was arrested before he could go to the location.
Navalny has only 2% support in Russia, while Putin has widespread support.