Re: psyah’s signature
The Ahlalbayth would follow the Sunnah naturally since they are the family of the Prophet (s.a.w) and moreover let’s get this clear. if it were not for the sacrifice of imam hussain, there would be no islam (sunni/shia or otherwise) in any recognisable form today.
if hussain gave yazeed allegiance (which is what sunnis remarkably suggest he should have done), then yazeed would have the implicit authority to do with the religion what he wills, and as he didn’t have any respect for the grandson of the prophet, what makes you think he had any respect for the religion itself?
hussain’s sacrifice has given mankind an opportunity to embrace islam and seek salvation. without it (islam), we’d all be going to hell.