I don't know if this occurs elsewhere, but in Toronto there are Gypsies who dress like Chossids and go around pulling cons.
This disgusts me more than anything, and it shows that Gypsies don't mind completely messing with the Jewish community.
I remember when I was working at a restaurant where pretty much all the customers were Jewish, and these two guys kept telling me thewy were Jewish, even wearing a Magen David. I was very suspicious, so I talked to them, and quickly realized they were Gypsies.(Gypsies always pretend to be something else in North America and will always lie about their ethnicity, lest you find out that they are Gypsy criminals.)
I told my boss, and he told them never to come back again, and that he knows what they are up too. (He was a Russian Jew) So even in North American these people are overwhelmingly criminals,