In Ukraine exists criminal gang called “titushkas” or thugs which cooperates with government and police.
At the beginning of this video taken at the EuroMaidan protest in Kharkiv on Sunday, Jan 12 a protestor was chasing a thug who had tried to attack him with a knife.
A crowd of people stopped the thug and called the police.
The crowd tried to identify the criminal, but the policeman didn’t let them and pulled him away from the crowd.
A piece of evidence (a knife) was noted on the ground by the police but policeman lets another titushka pocket the evidence and then let him run away.