Quebec chain saw road rage

The other day a family is terrorized by a wanna be chain saw villain...during a parking lot altercation this loon whips out his chain saw and approaches the car, chain saw whirring, the mother in the car with her kids is running clear video and audio of him as he threatens the family.  He is arrested, and he is pleading not guilty, not guilty, he is on video, there is no doubt, or shadow of doubt, zero doubt.  How is it that people with the lower intelligence of this guy has survived this long in life?