Responsibility cannot be applied to such an abstract concept as a "side." Responsibility can only lie with specific individuals. Here are the specific individuals responsible for the revolution: Yanukovych, Azarov. And many other people in power who are going against the people and provoking the revolution, and they will be justly punished for it.

My subjective opinion is that this is not a revolution and cannot be one. Of course, there are about 3-5 million people who are dissatisfied, and this is a force that must be reckoned with, but there are 45 million people in the country. So, when the "Bender" types come to power, should they act with the same methods, but from the other side, and will the responsibility lie with those who came to power? No, I still believe that both sides are responsible here.