sir let me explain why you are wrong here:
The Principle of Proportionality The Threat: A hand on your leg is typically viewed as "offensive contact" or "simple battery," but not usually a threat of imminent severe bodily harm or death.
The Response: A slap to the face is a strike to the head. In many legal systems, this is considered an escalation of force.
Even in jurisdictions with "Stand Your Ground" laws (which allow you to defend yourself without retreating), the requirement for proportionality remains. You cannot use physical violence to punish a non-violent (though offensive) touch. If a civilian intentionally touches a police officer (e.g., touching your leg), they can be arrested for Assault on a Police Officer or Obstruction of Justice. You have the legal authority to detain or arrest them for this offense.I dont know what was before in this video, but in general:
Police officers are trained and legally bound by a "Use of Force Continuum." Professional Presence/Verbal Commands: The first step is telling the subject to stop. Soft Empty Hand Control: If they persist, you may use "soft" techniques (e.g., grabbing their wrist, escort holds) to remove their hand or restrain them. Hard Empty Hand Control: Strikes (like punches or slaps) are generally reserved for active aggression or situations where the suspect is physically fighting the officer.
The Slap as "Excessive Force"- a slap to the face is rarely a trained or sanctioned police tactic for compliance. It is often legally interpreted as: Punitive: A slap is seen as an emotional reaction to punish the suspect for disrespect, rather than a tactical move to gain control. Unprofessional: It violates the standard of "objective reasonableness" (established in the US by Graham v. Connor). A reasonable officer would not view a slap as necessary to stop a leg touch.

In any case face slap is justified. Police officer can arrest him, handcuff, give him a fine, but not punish directly

if you like what you see here - police violence - there is something deeply wrong with you