Stefan Bauer dared to answer back: when a German-speaking guard asked where he was from, he said he was from the European Union and he had the right to go where he wanted. He was hauled out, beaten, given a face full of pepper spray, stripped naked and put under a cold shower. His clothes were taken away and he was returned to the freezing cell wearing only a flimsy hospital gown.
Shivering on the cold marble floors of the cells, the detainees were given few or no blankets, kept awake by guards, given little or no food and denied their statutory right to make phone calls and see a lawyer. They could hear crying and screaming from other cells.
Men and women with dreadlocks had their hair roughly cut off to the scalp. Marco Bistacchia was taken to an office, stripped naked, made to get down on all fours and told to bark like a dog and to shout “Viva la polizia Italiana!” He was sobbing too much to obey. An unnamed officer told the Italian newspaper La Repubblica that he had seen brother officers urinating on prisoners and beating them for refusing to sing Faccetta Nera, a Mussolini-era fascist song.
Ester Percivati, a young Turkish woman, recalled guards calling her a whore as she was marched to the toilet, where a woman officer forced her head down into the bowl and a male jeered “Nice arse! Would you like a truncheon up it?” Several women reported threats of rape, anal and vaginal.
When the system is threatened police are always the same . One of the worst was g8 protest in italy in 2001
https://www.theguardian.com/world/2008/jul/17/italy.g8