While Murm accusations can not convince you on that particular video/argument; I hope it doesnt make you forget that there is ample evidence of the presence of a nazi branch in the military and law enforcement in Ukraine, especially in all the counter-insurgency special groups created by the government to deal with the rebels.
Politically, svoboda and right sector and other extreme right-wing paramilitary groups have not been able to win legitimacy after Maidan success, despite them having done part of the work toward success.
The result of the presidential election in Ukraine showed that Svoboda and right sector and other nationalist groups didnt exceed 3% of the votes!
Unfortunately, when we talk about joining the national guard and other government agencies which recruited en masse after the beginning of the unrest in Eastern Ukraine, it seems those 3% of the people were happy to help. Extremists and nationalists love to fight exterior forces.
I'm guessing than a big chunk of the civilian groups under the juridiction of the Ministry of Internal Affairs are not the most reasonable bunch and are being used by the government because they are more than happy to go in the thick of battle and do damages, or to patrol the internal network of Ukraine intimidating the people. The problem is both ideological and moral, since those groups are not only brutally efficient against the russian-backed rebels, eagerly dying for their country, but are also the ones committing abductions/rapes/murders alongside their rebel counterpart.
The Ukrainian government doesnt have control on those people they have given weapons and power to enforce the law.
After the insurgency is over, those people that have built the independance of their country, as with Maidan, will yet again have been sacrificed just to be removed afterward.
The problem is two-fold : those people might infiltrate the power in Ukraine too deep to be removed this time; and if a cleaning operation is undergone, it might start another unrest or at least a political unstability which will be detrimental to the future of Ukraine.
This is why I believe the Ukrainian people is not politically dominated by radical nationalism and neo-nazism, but radical nationalism and neo-nazism has played a part in Maidan and the counter-insurgency in the east, and is a help AND threat to the Ukrainians that I hope they are aware of.
To conclude, while I think nationalism is naturally increasing when a country is in a state of war, I think the Ukrainian people is still a healthy of mind people, capable of building their country, with or without Europe or Russia, but there is obstacles on your path and I hope you will avoid them. What I think are the biggest threats (except losing integrity of the country thanks to Russia, which is a greater threat at the moment and conceals other important matters) is being locked in Europe both politically and economically with no opportunity to ever leave it even if they only offer bad deals, and rampant right-wing and left-wing extremism which could potentally use the war to take control of various branches of the government.
Best luck to you and dont stop fighting for the good of your country.