Hmm, at least in the Netherlands I feel there is quite some attention for the role of the Russians during WWII, although the Canadians and the Polish, who liberated us, get the most attention.
However, one of the reasons that Russia's contribution to "winning" the war might be downplayed is actually legitimate: while the US, Canada etc. fought for freedom, the USSR would have imposed just another kind of totalitarianism upon Western Europe (and it actually managed to do so in Eastern Europe). I'm not even sure most of the Dutch would be better off under Soviet-style communism than under a nazi regime (myself and my community being the obvious exception, because, you know, I kinda like being alive). That doesn't have much to do with "rewriting history".
Yes that's a rather good point.