Although the US government generally condemns a countrys use of military force against its own population, especially if they are unarmed protesters, this time the US administration blamed the victims. After as many as 20 unarmed protesters were killed on the May 9th holiday in Ukraine, the State Department spokesman said "we condemn the outbreak of violence caused by pro-Russia separatists."
Why are people protesting in eastern Ukraine? Because they do not believe the government that came to power after the US-backed uprising in February is legitimate. They do not recognize the authority of an unelected president and prime minister. The US sees this as a Russian-sponsored destabilization effort, but is it so hard to understand that the people in Ukraine may be annoyed with the US and EU for their involvement in regime change in their country? Would we be so willing to accept an unelected government in Washington put in place with the backing of the Chinese and Iranians?