If the West really wants to prevent terrorism, for instance, it should take Noam Chomsky's advice: stop committing it!
The West has a long legacy of bloody colonial exploits and consequent scapegoating, racism and fanning the flames of hate. It has always excelled in divide and rule. It still does. Try building a minaret in Switzerland or wearing a niqab in Paris. Better still, just listen to Sarah Palin if you can bear to.?