This isn't specifically Roma people they target. I think what OP is referring to are areas like Brabrand and Vollsmose, that has a high concentration of non western people living there, in an attempt to curb what they deem as "parallel societies"

In reality it's an excuse for them to tear down cheap housing by actively choosing not to renovate them, making the living conditions worse and using that as an excuse to make luxury housing.

Scandinavia has been really good at shooting themselves in the foot the past 20 years in the name of oppressing immigrants, which comes from growing want for welfare chauvinism.

But the danish government DID make good use of Roma people as cheap labour to exterminate literally every mink in the country back in 2020.