Hitler and other Nazis decided to start up the Holocaust.
The assumption in the question is false. The Holocaust is not 'start[ing] again'.
You could argue that the Holocaust was the start of the modernity.
jews were the first who were killed at the stsrt of holocaust
The holocaust originated in Germany where the deportation of the Jewish people were forced to leave in the heart of the holocaust. though there are many start and end variating dates, 1938 - 1945.
The widespread memorialization of the Holocaust seems to have begun in the 1990s.
WW2 started before the Holocaust.
yes Hitler did
The Holocaust was not a conflict. It was nass murder. Please see the related question.