Ukraine's current government was voted in legally and installed democratically under the oversight of United Nations election monitors. Ukraine is a recognised and respected member nation of the UN. 
  
The former impeached Yanukovych regime manipulated Ukraine's constitution in order to give him total dictatorial control over Ukraine's government, and to annul political and  human rights of its citizens. 

Yanukovych also engaged in massive economic fraud leaving Ukraine teetering on the edge of bankruptcy. His close oligarch associates made off with billions looted from Ukraine's economy while he himself was living in a palatial $100 million estate while the country was collapsing around him. 
Is it any wonder why the Ukrainian people revolted against the highly incompetent and corrupt Yanukovych regime?