The question is easy to answer in imagination and difficult to answer in conduct.
We stand where our repeated choices place us—not where our self-image says we would have stood.
Ask inwardly first
The language of Karbala becomes dangerous when it is used only to condemn an opponent. Its first work is inward: exposing fear, vanity, comfort, and indifference within ourselves.
Moral clarity without humility quickly becomes self-righteousness.
The evidence of a life
To stand with Imam Husayn (AS) now is to build a life in which conscience is not for sale. It is to serve without needing to be seen and to resist injustice without becoming unjust.
The answer is written slowly, through worship, conduct, courage, and care.