The killing of a 23-year-old Catholic convert and pro-life activist in Lyon has sent shockwaves through France, prompting a national outcry and a major criminal investigation.

Quentin Deranque died in hospital in Lyon on February 14, two days after he was violently assaulted following a pro-Palestinian conference organised by La France Insoumise at the Lyon Institute of Political Studies, commonly known as Sciences Po Lyon. The event was hosted by Rima Hassan, a Member of the European Parliament affiliated with the party.