I wouldn't call it successful yet, but it's definitely getting better:
The Revolution of Dignity (Ukrainian: Революція гідності, romanized: Revoliutsiia hidnosti), also known as the Maidan Revolution or the Ukrainian Revolution,[2] took place in Ukraine in February 2014[a] at the end of the Euromaidan protests.[1] Scores of protesters were killed by government forces during clashes in the capital Kyiv. Parliament then voted to remove President Viktor Yanukovych, return to the 2004 Constitution of Ukraine, and call new elections. The revolution prompted Russia to occupy Crimea, starting the Russo-Ukrainian war.[1][2]