As I've said before, I strongly disagree, but what I read is that he calls for the removal of those behaving in a way that (in his opinion) make the city of Copenhagen less safe, or at least that change the perceived security of the people living there.
Gypsies create issues almost everywhere in Europe, but it's not based on ethnicity, most of the ethnic Roma are fully integrated, some of them are not, in Italy many Sinte families are linked to mob and criminality in general.
Do they deserve special treatment because of their ethnicity?
And what if they are not regular citizens?
It's an open problem, DHH's solutions it's absolutely not my solution, but there's a still a difference between what he said and calling for ethnic cleansing.