I looked up my friends' website to catch up on them and found that they've recently lost their daughter to a three-year battle against cancer. The cancer won, but it wasn't from her surrendering to it. He wrote an article about Trump's red baseball cap, and why he wears it, and I think the conclusion has its application in this case.
I noted an excerpt from the article:
In ancient Jewish wisdom there is a serious moral discussion about which poor person should receive your charity...One needs money for food, while the other needs money for clothing. The conclusion of the discussion acknowledges that the spiritual need takes precedence. A person's dignity and identity is often more precious than a full belly. (Donald Trump's Baseball Cap, Thought Tools, RDL, Jun 26, 2024).
The context of the article explains that clothing meets a spiritual need and is summarized as explaining that men wear suits and ties to community events such as church rather than more comfortable attire in an awareness of the community, by an outward consideration of the community rather than an inward consideration of oneself.
So, having not even viewed the video and only going by the initial image and backstory provided, this is France expressing their regard for the Christian's dignity and identity.