You do realize that Ukraine was shelling their Russian-speaking citizens in the east for several years for before Russia invaded, killing over 10,000 civilians?
In 90s and yearly 2000s Russia was invading Russia and tens of thousands of military and civilians died.
Do you have a source for this?.
I was wrong a bit, the number includes Russian volunteer fighters and with covert Russian military is estimated to be about 14400.
https://en.wikipedia.org/wiki/War_in_Donbas_(2014%E2%80%9320...