The yellow vests apparently smashed up the Arc de Triomphe. Well, vandalized it,and smashed some of the artifacts inside.
I was on wikipedia, and saw this:
After the interment of the Unknown Soldier, however, all military parades (including the aforementioned post-1919) have avoided marching through the actual arch. The route taken is up to the arch and then around its side, out of respect for the tomb and its symbolism. Both Hitler in 1940 and de Gaulle in 1944 observed this custom.
So, while I like the yellow vest protesters, Hitler, you know, Hitler, thought it was uncouth to violate that monument.
Vive le Roi