I think you should check the spelling of your post, but if you mean uniforms of the prisoners, they were pajamas, the shoes they took in with them and their jewelry, which was stripped from them upon death.
There was no 'Holocaust flag'. I wonder if you are confusing the Holocaust with something else?
the Holocaust is a concept, it cannot be seen
it sucked.
clinical
There is remembrance of the Holocaust but there is no 'Holocaust movement'. That expression makes it sound like a political campaign.
hopeless
horrible
unpleasant.
There have been many things like the Holocaust, but none over such a long period, across so many countries and in the West.
In the Holocaust most of the gassing was done on an "industrial" basis.
like dying over and over again.
if an event similar to the Holocaust were to happen, then they would give it it's own name, like they did with the Holocaust.