Are there no constraints to ideas/ideologies,religions that can be reformed?. Or anything can be reformed?.
Is it possible to get Hitler admiring people to not be racist ? or to stop hating jews?. Or is it the case that no matter the endless creative de tours one takes it will in the end fail as some people will see it straight forward and follow the example of hitler and become racist/anti semitic.

If individual leaders are the anchors that would constrain ideologies like nazism along with its other ideas, can something similar be true for other ideologies & religions? Should we be surprised by ISIS considering the model they were following?. Will it not be the case that for all the reforms, there will always be break away movements that will once again want to follow the original teachings with straight forward views of the times?.

I leave it for you to ponder. This is very important, because there are people who would want to believe that all ideas can be redeemed and to express doubts over this would invite charges of bigotry. If a bad religion x can be tweaked, another bad religion y can also be tweaked, does that mean all bad religions can be tweaked to be moderate and if some one disagrees , is it enough to simply call them as bigots as an answer in itself?. Or could they be true. If they are true, would it not be the case that the world that unfortunately ends up with that particular religion/ideology, many good minded people of that world will end up giving cover for it will eventually hurt them all?. Politeness itself can become a catastrophe?.

The appropriate answer to such answer would be to preserve a world where one isnt entirely polite, one is willing to call out all religions/ideologies and test and prod them. And be allowed to declare that some or all ideas cannot be truly be reformed and encourage people to abandon them in its entirety. The proof of burden of moderation should be on particular ideologies/religions & not on everyone else to be polite.