Answer:
In simple words, the tragedy of Anne frank and holocaust was deeply observed by all the individuals around the world when Anne frank's diary got published as a book. After that people got to understand the brutality of such actions and how does it affects the whole world.
After such incidents people get to know the pain of others and started realizing that the world belongs to all of us and diversity is beautiful, it should be maintained and no destroyed by violence.
Crises because it is plural
Prefixes are added to the beginning of a word to alter it's meaning.
example: pre
