Probably something like «rohadt cigány» if it's anything close to the kurwas in Hungary.

You mean cyganie. Thats pretty much just the coloquial name for romani pepole. Belive it or not other than ocasional old lady trying to scam you they never were that much of a problem in Poland nor they were treated particulary bad. In fact they are romanticised a bit in Poland.

Now they are still treated with wary beacuse obviusly they are. Its pretty hard to not be when most interaction general population have with them are them trying to scam you. Is the reason for them doing so beacuse of some historical racism in the south? Maybe. i dont know nor do i care .