That is some "logic". So Greeks were responsible for Mussolini because they are close to Italy?
Sorry, no. Back in the good old days everyone was fighting everyone and the Greeks also were happy to war and expand.
What we can talk about is the last give or take 200 years when the borders mostly settled and modernity started. This is where ruzzia (and a couple of other nice empires) were trying to fuck everyone else. For ruzzia it was starting with Japan, Korea and China over by the Asia and into Europe, wrapping with Finland.
Ukraine for ruzzia was always a problem exactly because of the so called similarity. The Rus started in Kyiv and it was a great shame for them. Ukrainians were supposed to be uneducated slaves, not founding fathers. That's why ruzzia systematically tried to destroy the culture, the language and the people.
Soviets inherited the approach and pootine has happily announced he's doing that too.
And that's what matters. Unless you would like to suggest that Greece should pay reparations to Egypt for occupying in Alexander's time.
Are you seriously connecting one murder (which is definitely a terrible thing) into a systemic oppression?
But if there's indeed an opression happening, now should be the perfect time to fight it not by complaining but by doing it legally with support from ombudsmen. Start a movement, but integrate it as a common fight, which it is.