Any thinking person in America could tell you that! Diversity only works up the point where having a national identity is not relevant.
Multiculturalism never works. Never has never will; especially two diametrically opposed cultures like Islam and Christianity. Christianity is a true religion whereas Islam is nothing more than a long standing 1400 year old cult who know nothing more than killing those who will not accept Islam as being the one true religion.
If the cultures are more compatible like, say, Buddhism and Christianity; the two can live in harmony as long as one does not try to convert the other. That’s when the trouble starts.
Can wolves and sheep live together in harmony? Lions and Gazelles? Maybe at a watering hole but that’s about it. Nature, like people, has a balance. When idiots like liberal politicians attempt to go against the nature of a people like mixing modern day cave people like middle eastern muslims into an advanced and peaceful culture like in Sweden the result is so easily predictable one simply has to wonder who was the brain dead idiot who thought that mix could work? That person should be made to experience what they had forced on others. Say; put 5 twenty something year old men from the refugee group together in the same house with Merkel and the others who thought like her and just let things take their course. I bet no other idiot pols get the same idea anytime soon when it’s their life on the line.
Islam sure is "good" from the perspective of males. They're also solving the "World's problem of overpopulation".