I can't remember coming across any Gypsies communities there.
There's quite a few notorious ones, but this is the worst one, possibly in the whole of Europe google.com/maps/@48.696278,21.2211864,3a,75y,5.28h,92.54t/data=!3m6!1e1!3m4!1sV5qlVTOJvFhU_v3_hY7gRQ!2e0!7i13312!8i6656[/url] - it's Lunik IX in Kosice. I've been nearby (but not into it) and I couldn't believe how bad it looked from a distance.
There's another bad slum here in Usti nad Labem - google.com/maps/@50.6554091,13.9981381,3a,75y,101.41h,91.43t/data=!3m6!1e1!3m4!1sgfsN-Xwp6mePaEbprTVfuw!2e0!7i13312!8i6656[/url]
I wish I had answers to this, but as the Slovaks pointed out, they've been trying since 1945 to solve the problem and they don't have any answers, so there's definitely no way that Western Europeans will have better ones. Interestingly enough, I've been to other places in Eastern Slovakia, and in a town called Svidnik, the town is very mixed - there are Slovaks, Ruthenians / Rusyns and Roma all living side by side, and they don't have large social problems and the Roma there seem to be very well integrated.
And most of the time the kid is asleep - some claim these kids are drugged.
I think there might be some truth to it, sad as it is.