Prosecutors investigate Macron aide

French president’s security officer probed after he’s filmed hitting and stomping a demonstrator.

French authorities opened an investigation after an aide to President Emmanuel Macron was caught on video assaulting a protester during the country’s May Day demonstrations.

Paris prosecutors announced their probe into Alexandre Benalla on Thursday amid a public outcry over the incident on May 1.

The video shows Benalla, wearing a police helmet, dragging a woman away and then hitting a young protester and stomping on his stomach.

Al Jazeera’s Sonia Gallego reports from Paris.