Moscow riots trial
Russian protests of winter 2011/12 were effectively stopped by the government with a few minor changes in country's political system and a few massive pro-Putin counter rallies. And then came the crackdown.
The opposition held a rally on May 6, a day prior to Vladimir Putin's third inauguration. The rally turned into clashes with the riot police forces after they blocked the crowd's path leaving a road way too narrow for an 80,000 march.
Thousands were detained, hundreds served minor terms for different misdemeanors. More then 30 people were arrested including those who were not even on a site. Two dozens were imprisoned and sentenced to up to 4,5 years. Many fled the country. The protest movement dissolved.