It’s basically the secular Jews who consider the Jews who fought back physically to be the main heroes of the holocaust.
While the Torah world may possibly also consider them heroes, they have much more admiration for those Jews who fought by holding on to their Emunah and being moser nefesh (risking their lives) in order to keep the Mitzvos.
The Gedolim considered the establishment of 27 Nissan as Yom HaShoah to be very problematic for several reasons. One of those reasons, I believe, was that the date was chosen since it’s the date of the Warsaw Ghetto Uprising.
The secular and zionist Jews wanted to commemorate that date as they were embarrassed about the fact that we “went like sheep to the slaughter”. They consider the Jews who fought back physically to be the main heroes of the holocaust, and those are the ones they want to remember since they are embarrassed about the others.
That is not the Torah approach. To us, the main heroes are the ones who gave up their lives in order to keep the Mitzvos – the ones who found a way to light the Chanuka Menora in the concentration camp even though it meant risking their lives, the ones who went to their deaths singing Ani Maamin and saying the Shema, knowing that this was Hashem’s Will and that they were dying Al Kiddush Hashem.
For us, those are the true heroes. We are not embarrassed about how we died and do not need to prove to the world that we are just like them and we can have an army just like them (I’m not against our having an army to defend ourselves- I am talking about the attitude that sometimes go with it, and the lack of awareness that our main defense is Torah and Mitzvos).