I am in Paris right now near the Seine. I don't see jack s* going on. plenty of Christmas decorations. people strolling around.
walked by the premier house just now after breakfast. yeah, the gendarmes were out in combat gear but they seemed to be just standing around with nothing to do.
cafe’s are pretty full, traffic light.
so maybe somewhere near the arc de triomphe stuff is going on but i don't see anything remotely like “lock-down”.
a lot of retail stores are closed though, and there are boards up and paper covering a lot of windows. i don't get the paper thing, but who knows.