Answer:
During the Holocaust Nazi Germany killed millions of people in a systematic genocide, with a goal to erase Jewish population from Europe.
According to estimates around 6 millions of Jews were killed, and around 5 million more members of other ethnicities.
It is one of the worst genocides in the human history.
Explanation:
Holocaust brought so much suffering to the people during WW2 that is practically impossible to explain its extent.
The hatred expressed in a matter of just a couple of years should never be forgotten, so it will be prevented in future to happen.
