Why is Europe always attacked by terrorists?

Europe and America dominate the Arab world, and green fanatics must seek independence from Europe and America.

Immigrants, the mainstream in Europe is the Socialist Party. They all say that they are SHZY, and they can't help emigrating, which aggravates the social Mao Dun. Immigrants feel that they are weak, have not been treated like locals, and even need more care; Aborigines don't like immigrants because of their beliefs, job opportunities and other reasons.

Freedom of thought, all kinds of messy ideas, the government does not strictly control ideological aspects, books, speech, religion.

Like China, organized crime, aggrieved people and so on.