"Security" laws extending the powers of the police and creating new ways to criminalize protest have been passed at a constant rhythm over the years since Sarkozy's time. After the state of urgency of 2015, part of the dispositions where simply put into law permanently.
Police has been increasingly violent during protests, bringing back old forbidden tactics and squads formerly dissolved for their violence (voltigeurs).
While there has been no dissolution of leftist movement and no political violence from the left since "action directe" in the 80's, there have been multiple ones (or attempts) in recent times, like the one from yesterday of an ecological movement.
Anti-terrorist laws are used to detain ecologists or protesters indefinitely, like in the case of the "8th november" affair from this topic, which has seen a person kept in solitary (hence, tortured) for 16 months without even being convicted.