This is a little like freaking out about Monticello or Mount Vernon during the 1992 Rodney King riots in L.A.
France is a big country.
Perhaps, but the article does state:
" ...the "French Intifada," ... had spread almost all over the country, with the exception of Inner Brittany, western Normandy, and Burgundy..."
So unless a person knew the geography of France well, including the location of the US WWII dead, it's not unreasonable to express concern.