Re: Mullah Omar is Dajjal?
If on the day of judgment it is proven that he is not Dajjal, then first I would have to hand over a lot of my good deeds to him (or take his bad deeds) for calling him Dajjal, because only justice would prevail on that day. Secondly, he might be given the right to grab me from my neck for trying to disgrace him without having full knowledge.
Same goes for other people. Only Allah (Swt) is the Judge. If I try to judge people and disgrace them without having full knowledge about them (and their intentions), then I am worst than Dajjal.
Even if a person knows bush, osama, mullah...etc. are bad people, the prophet (saw) only emphasized on struggling for a better cause instead of wasting time in criticizing / ridiculing / abusing,....etc. these people, because he himself never did / said anything like that for Abu-Jehel.