This is pure propaganda.
Watch Winter On Fire instead for what actually occurred.
I was personally at Euromaidan and I am an eyewitness, and I am very strongly anti-Nazi.
There were radical elements there, but they were useful idiots and the general public had no real support for them beyond allowing them to risk their own socioeconomic credit for being the first to stand up to the kleptocratic violence from Berkut, etc.
Oliver Stone denies that Yanukovich did anything wrong, and yet the former wannabe-dictator's home was revealed to demonstrate obnoxious wealth, stolen from the population, which is an act of treason at the very least, and is perfect grounds for impeachment (through our extremely corrupt court system, it could never have been done). Then, as he fled to russia, he and his team stole $32 billion dollars in cash, apparently transported in trucks.
This poor excuse of a film maker must either live in a fortified echo chamber or have been paid gracefully by Yanukovich and/or the Kremlin.