I didn't suggest it did make a difference between the asylum seekers and in fact I have stressed this repeatedly, we don't know about the immigration status of this group.
What we do know is 69,000 crimes were committed in the first 3 months of 2016 by people who would be classified as migrants.
We don't know that the crime rates have "spiked", what we do know is that the percentage of crimes comitted by migrants increased by 78% in 2015, however we don't know what % of crime this is over all. If we take 2010 over all crime figure (the one I can find) which is 5.1 million crimes then migrants would be responsible for 4.1% of all crime in Germany.
We also know that the vast majority of these crimes are minor, if we say that the data would be broadly similar to the type of crimes committed in 2015 then between 75 and 80% of these crimes are minor.
We have a problem in that an extremely tiny minority have taken advantage of this to commit atrocities which are quite rightly to be condemmed, however it is a post hoc fallacy to assume that the borders policy caused this attack, or would have kept people safe.
I think the humanitarian reasons for allowing refugees in were far more great than any reason of cheap labour, portraying it as a cynical and explotatitive attempt to gain this is actually something I've only seen done by BrietBart and other similar publications.
I'm certainly not thick nor brain washed, although of course I am a leftie ( but of course using that as a criticisim is an ad hominem which further undermines your argument) but I think I've demonstrated clearly that what people have been attempting to use this data for is incorrect.