I have to thank Sébastien Jallamion for the video and information below. You have met Sébastien Jallamion before: here and here. He now writes quite often for Riposte Laique.
In his latest article he tells of the shock testimony from a CRS who was among the 6 policemen hurt during the violent leftist demonstrations on the 1st May in the streets of Paris. This testimony proves that the Police hierarchy protects the violent left-wing militias, while it prevents the police from defending themselves - even from thugs who mean to kill them, also known as "Cop Killers".