Using your logic, let's just hope that no one reminds America about slavery when we preach human rights and the dignity of man.
The people who perpetrated slavery in America are long dead. The people who perpetrated Nazism and Vichy collaboration are still within living memory. When the Germans and French have at least 140 years of distance from World War II and have paid out massive reparations to the Jews (America did in terms of welfare and affirmative action), then they can talk. But not before.
Ivan