Interesting. Fair point.
I've always suggested that immigrants are usually the best and the worst of their society. Mediocre people normally stay behind.
Fortunately, the good ones tend to outnumber the bad ones, but the bad ones help create the crime stats that show immigrants to be overrepresented.
I once read an essay on crime and immigration that stated that whereas 99% of Swedish men will never be convicted of rape, the same is only true for 98% of immigrant men. A different take on the suggestion that they are twice as likely to commit this crime.
At the same time immigrants are also far more often entrepreneurs, starting and running their own companies. They tend to work longer hours and take on crappy jobs that Swedes don't want.
Now, migrating as a person to a nation that is already up and running, with army, police, government, etc, is not quite the same as colonialism, even if there are parallells. I would think the vast majority are farm colonists, looking for a better/safer place to raise their children than the war torn hell they just left. But of course there will be a number of opportunists among them that hope they can somehow cash in and then go back home.
This is probably more common as crime tourism though. A lot of those criminals never want to be registered with the authorities to begin with. In that regard, the immigrant group that is most overrepresented in Swedish crime statistics are Finns. Not necessarily because Finns would bemore prone to crime, but because Finnish criminals figure there is less risk getting caaught if they do their crimes across the border and then quickly head home again. When they are caught they go into the statistics as Finnish born criminals, even if they aren't really immigrants at all. They just happened to get caught on a cross border crime spree.
An extreme case of crime tourism is when young boys from Morocco arrive in Sweden, ask for asylum (which they will not get) and then disappear. There seem to be hundreds of these Moroccon street urchins in Stockholm now, and they would probably fall into the "exploitation colonist" category. Their intent has never been to become Swedes, or to get refuge from an oppressing regime or a war, they're just here as criminals. They just use the asylum thing to get through at the border, although I doubt they let them in any longer.
A problem in adressing the issue is that Morocco has for the longest time denied they are Moroccon citizens and has not been interested in having them shipped back. And since they tend to be under age, there are strict restrictions on locking them up (we don't have child concentration camps in Sweden - yet), so they often escape and disappear again as soon as they are given a chance.
I think Sweden has come to some sort of agreement with Morocco now though, so hopefully we will eventually be able to get rid of this problem.
The vast majority have come here looking for a safe haven though, and they tend to be loyal to Sweden.
Unfortunately the minority that is not, is more visible as they tend to get a lot more media attention.
It's rare that you write an article about the hundreds of thousands of immigrants that work and pay taxes, but as soon as one commits a crime - it's front page news.