The OP is probably referring to this well known article (in French): "In 2020, 27 deaths as a result of law enforcement response, including 12 during containment"
https://basta.media/recensement-interventions-policieres-let...
https://basta.media/recensement-interventions-policieres-let...
If talking about secret services murdering people, the Rainbow Warrior would be a good example: https://en.wikipedia.org/wiki/Sinking_of_the_Rainbow_Warrior
And about police torturing people, i've been lucky enough to be only mildly hurt by police who beat me down on more than one occasion, but i know first-hand people who were tortured by police. These situations are well-documented by copwatchers. One case made news worldwide two years ago but is a good symptom of the wider problem: https://www.theguardian.com/world/2020/nov/26/paris-police-f...