Investors and traders said the falls were connected to investors' unease over the potential impact riots could have on the economy and on tourists' appetite to visit the capital.
"It's not good to see those images of a major capital," said a trader. "It could hurt the economy."
The falls came even as France's top stock index climbed 1.9 percent, on track for its best day in a month after a truce in the U.S.-China trade war.
(Reporting by Helen Reid; Editing by Toby Chopra)
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