@Kylo, how or what do you define as "No go" area's? I can remember that I was concerned (as a 6' tall male) to walk around in Frankfurt in the areas surrounding the main railroad station (that was in the late 60"s), and the same in Berlin Kreuzberg, or certain areas in Duisburg, Cologne, Hamburg and even Düsseldorf. We just did not call them "No Go "areas (the Press invented that expression in Germany). I have my doubts that anything has changed since then, and at that time, it were mostly native born Germans who made me feel very uncomfortable there.
I think if we can leave polemic out of our observations what is going on, we can see the realistic situation, and that has not changed very much since the 60's. And corrected for population size, the thread to females even went down!
Are your sources of information associated with the AfD, or fancy this grouping? If yes, I can understand this!
I cannot say anything about Sweden!