The widespread devastation caused by the holocaust can be directly tied to the following

The holocaust as many historians have described as "sacrifice by fire" is attributed to the murder of approximately 6 million Jews by the Nazi governed regime in Germany on January year of 1933. For various political, religious reasons etc., the German at the time as the deemed the Jewish people a threat, racially inferior to them and even to the extent unworthy of life.

And this too use this if needed