Just gotta remind you that Europe is a continent with 50 countries.
They are treated with suspicion and mistrust by the regular people here in Sweden. I dont know about the police, but I reckon they think the same things as regular people think. As I recall, there have been several cases of the police being caught keeping lists on gypsies and other such minorities. Why? Because they arrest them a lot. Why? Because they commit a lot of crimes?
The hypermarket where my aunt worked at always, ALWAYS, had someone follow the gypsies around in the store when they came in because they would try to shoplift if they could. They would come in a small group of 2 men, 1 woman and 2-3 kids. The kids steal, the woman holds the goods and the 2 men defend the woman by becoming super-aggressive to intimidate people away, because most people don't want to fight over something like that.
Then ofcourse, you've got the dozen or so romani who come into town in their vans to beg for money to some fake cause. They're extremely annoying and in your face about it. Some times they use kids as bait.
I got scammed by one of those kids once. He came up to me and held up a rose to me, asking me in broken english to buy it and shoving the rose in my hands, he said "25. 25." (25 SEK, around 3 dollars) but I had taken out a 50 bill expecting to get 25 back. He took the 50 bill, took the rose back from me and scampered. I was so taken aback by it I didn't even react until I got home.
Does this give you a good enough idea of what some people think of gypsies?