Poland has objected to Obama's reference to a "Polish death camp" while honoring a Pole who helped make the world aware of the Holocaust taking place in Nazi death camps in Poland. The Polish objection shows their sensitivity on this issue, but certainly what Obama meant was that this was a death camp in Poland, not a death camp run by the Polish government.
Nevertheless, when I lived in Poland I was struck by the fact that they almost always referred to atrocities of the the World War II era as having been carried out by the Nazis, not by the Germans. The Germans are still here and still next door neighbors of Poland, but the Nazi government is long gone. So, the Poles live up to the standard that they are demanding from Obama.