Anti Backwardism; Why?

Training against an ideology, religion or nationality; why?
Certainly, ill will for doing any action isn't acceptable and those who have violent view against a religion, ideology or nationality are convict because it's all against social democracy and liberalism. But when an ideology, religion or nationality becomes a weapon for war, expansionism or creation of fascism and totalitarianism, there's no way except putting down the practical weapon. 
When Marxism becomes an ideology in order to war and conquest other countries, is there any other solution except attack to their weapon?! Or the same in Islam with Taliban or Arabs with Pan-Arabism and Turks with Pan-Turkism were going to create fascism!
International community are damaged by Fascism, so it's inevitable they resist against all forms of fascism including extremist nationalism, ideology or an  religion that may lead to the fascism. 
However, the author believes religion support the public order because many crimes and indecent acts considered as sin in religious books and actually prohibited. So, making decision on any religion isn't easy until it's not against the society.