Karpiankou was noticed among state security officials who personally participated in the crackdown of
mass protests that followed a controversial
presidential election. On 6 September 2020, Karpiankou smashed the glass door of a café in
Minsk while pursuing protesters fleeing from him. It was arguably the only glass window broken during protests with hundreds of thousands of protesters participating. He was also identified among security officials who kidnapped and tortured another protester in Minsk. In November 2020,
Sviatlana Tsikhanouskaya initiated the recognition of GUBOPiK, the unit led by Karpiankou, as a terrorist organization for its participation in
police brutality. On 15 January 2021, Belarusian independent media published an audio recording of Karpiankou allegedly speaking to interior troops and making shocking comments on the ongoing protests. On 2 February 2021,
TUT.BY got the results of the phonoscopic analysis of the record made public by BYPOL. In April 2021, Karpiankou voiced public threats to exiled members of the opposition in an interview on Belarus state television. ==International sanctions==