I agree that this is a European thing, the problem here is that the minority in question are Russians.
I think you might be connecting too many dots at the end of that; that Right Sector controls the government. It looks to me that they are basically a unit of the Ukrainian military. At the end of the day, it will be the authority that receives IMF money that calls the shots. I just find it implausible that the IMF would hand over something in the region of 30-40 billion to a group like Right Sector (they seem a little bit stupid and certainly not able to run an economy). Power is likely with the oligarchs. It would be a problem if they become right-wing radicals. If Tymoshenko was openly praising the deaths in Odessa, that would be remarkable. She was controlling Ukraine's gas supplies and was happy to deals with the Russians.
For me, the bigger problem is the fact that the Ukrainian government and oligarchs (and the west it has to be said) seem totally desensitized to the idea vilifying and killing the 'Ukrainian Russian' minority. If that has happened, e.g. sending in a far-right paramilitary to burn the TU or just doing it themselves, it does seem like the Russian minority will, at best, have no representation in parliament. In these terms, my guess would be that the Ukrainian government is probably fascist.