With so many Russians and Russian speakers living in Ukraine, it's easy to paint ANY form of BASIC LAW AND ORDER as some racially motivated crackdown against Russians. Simple omission. Neglect to mention that they really were committing some crime, and focus on their ethnicity to incite nationalist emotions.
It could even be said that part of Russia's aggression is their constant support for any criminals in the Ukraine who happen to hold Russian passports. If a Russian gets arrested, they can rely on RT or some other news agency to make some noise about their case, or if it's only a minor thing, they will be added to the statistics and later presented as one of the victims of Ukrainian nationalism.
This is just another part of Russia's hybrid war tactics. Criminals are not soldiers, they do not wear Russian uniforms, but they can still attack the 'enemy' country with their criminal behaviour. It makes great propaganda because Russian media liars can cry wolf that the "Ukrainian junta is oppressing ethnic Russians!
Innocent Russian civilians are being targeted for no reason! Ukrainian nationalism and Nazism is getting worse!"
What if the criminals get extradited to Russia? Nothing. It's the evil Ukrainian junta, of course! So the criminals are protected. Russia sends no soldiers, and it's all just internal, civil unrest inside Ukraine, which has nothing to do with Russia, amirite?