I wonder what he thinks of all the Swedish culture that was imposed upon the Latvians for 300 years? Or the Lithuanian culture that was imposed upon them and upon the Belaruss/Russians/Ukrainians? Again, you don't see Latvians in Russia denied citizenship or force to take humiliating tests when they were born there, but then again you don't see NKVD veteran parades either.
I doubt he has a problem with it. He is just opposed to undermensch such as the Russians imposing their "degraded" culture upon their racial betters.
You are on very thin ice with this claim. There may be no NKVD parades but you see war criminals like the sub commander who mudered thousands of women and children on the Wilhelm Gustloff refugee ship lionised as heroes in today's Russia.
Also, Russian histories make no mention of the mass rape and murders commited in Ostpreussen by the Red Army. Treating WWII war criminals as heroes is quite as much a Russian trait as a Latvian; indeed more so.