Poland's prime minister has spoken out against a Russian motorcycle club that plans to ride through Poland on a journey to Berlin to mark the 70th anniversary of the end of World War II.

The Night Wolves, a nationalistic group loyal to Russian President Vladimir Putin, plan to retrace the westward path Soviet soldiers took in their defeat of Nazi Germany.

Plans to go through Poland have angered many Poles, with Prime Minister Ewa Kopacz on Wednesday saying that she considers them a "provocation."

Poles still have bitter memories of Soviet actions during World War II. Though thankful for the Soviet role in defeating Hitler, Poles were also subjected to an often cruel-Soviet occupation in their country's eastern half during the war.