No civilised society can allow the subversion of its institutions by extremists.

Domination : the exercise of power or influence over someone or something, or the state of being so controlled.
Subservience : willingness to obey others unquestioningly.
Destruction : the action or process of causing so much damage to something that it no longer exists or cannot be repaired.
Subordination : the action of subordinating or the state of being subordinate.
Subversion : the undermining of the power and authority of an established system or institution.

Synonym of Subversion is Destruction