Too many people think of Europe in terms of Germany, France, Italy, UK and Spain. There are _many_ countries in Europe who know exactly what it feels like when Russia comes to "liberate" and what it means for the future of these territories.
Justification for what? If Russia wanted to support russian ethnic people in Ukraine it would not invade Ukraine, but offer non-destructive help to those people.
The reason these sanctions are harming normal people is that Europe is driving for a change in Russia that will never happen unless the people blame its own government for the situation.
A response late is better than no response. I believe what you are saying is that if some countries were destroyed, others should be as well? Europe protects itself as it considers Ukraine a part of Europe, that's not racist, that's pragmatist.