The day, 13th November will be marked as a black day in the history of France.
The hashtag had been user over 611,000 times on Twitter as of early Saturday afternoon.
As of Saturday afternoon, the hashtag had been tweeted over 16,000 times.
Many users praised Facebook for quickly launching the feature on Friday night.
Zuckerberg also changed his profile picture, and thousands of Facebook users followed suit.
source: www.techworm.net
