This case is unique because commonly genocide is a something that is organized by an ethnic majority against an ethnic minority
Yes, that was the situation in Kresy - Poles were a minority among Ukrainians.
But in Poland Ukrainians were small and oppressed minority.
Stop twisting facts - we aren`t talking about whole Poland but its Eastern territory.
nations start to talk about genocide when number of victims is counted in millions
No. We talk genocide when the whole group/nation/minority is targeted for annihalation. It happened to Poles in Volhynia.
"if you owe me and I owe you - the debts are cancelled".
Yes, but Poles retaliated on Ukrainians only after Ukrainian nationalists had already massacred dozens of Polish villages. It wasn`t Poles who first went on a murderous spree. So, it isn`t the same measure as you suggest.
Ukrainians expressed their position on the subject long ago: "we forgive and expect to be forgiven".
Yes, of course, we should follow our Christian credo.
I only meant a balance in nature which I`d love to see everywhere: Ukrainian monuments to nationalists from UPA and OUN should be counterbalanced by Polish memory marches.
Isn`t it fair?