If you don't quote a credible source for those allegations, no one believe them.
There is reliable information of some extreme right wing parties on Ukraine, but I would like to see good evidence that they have strong armed groups, autonomous from the State, fighting on the separatist parts of the territory. Those pictures can be from some morons gathering on weekends and harassing some ethnic Russian neighbors.
You have no info about integration of Neo Nazi in Ukrainian armed forces?
https://www.facebook.com/teroboronaDonbass