Thousands protest against President-elect Vladimir Putin and his political allies . Some demonstrators veer off the agreed route and throw objects at authorities . State-media reports police `` clubbed '' some protesters ; others were injured by batons or other blunt objects. More than 250 are arrested , including key opposition figures , police say .
Thousands protest against President-elect Vladimir Putin and his political allies . Some demonstrators veer off the agreed route and throw objects at authorities . State-media reports police `` clubbed '' some protesters ; police deny using tear gas . More than 250 are arrested , including key opposition figures , police say .