Posters are trying to have a reasoned conversation about ‘this’. Speculation, as you are doing, is fine to some extent, especially speculation that has a logical basis behind it. This can be the seed for research. It would certainly be interesting and useful to know whether most rapists in Sweden are actually foreign-born. Is the convicted population of rapists representative of the entire body of Swedish rapists, especially when we consider the low rate of rape prosecutions?
The problem is that you and others have already decided the answer and the OP introduced statistics that were intended to back up this point of view. The statistics say what the statistics say, but the data is of limited value unless we have a fuller picture of the ethnic breakdown of men accused of rape. Other posters trying to open up the conversation have then been accused of the opposite!
I came to the conclusion some years ago that having conversations with white people about issues concerning race is a waste of time. The people you need to speak to are not the ones who want to know the truth, the ones who come to discussions with a fairly open mind. These people are already taking a more rounded view. The people I would like to expose to a different viewpoint and challenge some of their preconceptions, they have fixed views. You can debate all day long but they only want to hear things that back up what they already believe.