If an immigrant who gets citizenship, then commits an aggrgeous crime (the Air India bomb ), should there be a way to revoke citizenship and send him back, even at the cost of his family to choose to leave or not?

Is there a warning about the consequences of getting deported, even though a citizen ( not born here).  Would that decrease the amount of culture crimes I.e. honour killings, encouraging or inciting  terrorism etc. If they knew the result?