No lines after the first one. Make it any more correct. A holocaust is a Hebrew term referring to a sacrifice in which the offering was burned completely on an altar.
There is no way in which it was appropriate to use within the context of world war II. That is inappropriate to use now. After all, Holocaust is not the Hebrew term for 20 million.
I virtually agree with most of what you said after that first sentence. The question is why did you feel the need to post that first sentence however.