Yeah they've done that in many occasions too,specifically I remember seeing on TV Christmas or New Year's Eve gathering in Athens,back in the early or mid-2000s,where the municipality had a live orchestra and festival for the people. And masses of Albos and others gathered there,the cameras would show women who were found isolated among their hordes,screaming that they were being groped,chains pulled from their neck,purses stolen etc. Then the whole thing devolved in gangs of Albanians vs Kurds with belts,chains,throwing stuff to one another,beating each other up,all right under the band playing,the police absent.