Russians were widely represented on Maidan. According to the poll from February, 16% of Maidan spoke Russian at home. [1] There are so much fuss about "fascist" Ukrainians, but surprisingly zero information any discrimination against Russians. So, nope. What about Pravyj Sektor -- you really can't find something more important to worry except their flag? For example, worry about ethnic Ukrainians in Crimea? Ukrainian channels were closed there, Ukrainian language will not be protected anymore in Russia, Ukrainian people are abused, beaten, kidnapped by Russians. That very real discrimination doesn't worry you comparing to hypothetical discrimination of Russians in Ukraine?
[1] http://www.dif.org.ua/ua/polls/2014_polls/vid-maidanu-taboru...