How to change YOUR Facebook profile picture to French flag to honour Paris victims

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Facebook users are paying tribute to the Paris victims

The social networking site has introduced a French flag filter to mourn the 129 people killed in the tragedy on Friday night.

Users can superimpose red, white and blue stripes on their photo by clicking the "customise your profile picture" option.

They can choose whether they want the touching filter to expire after a day, a week or a month – or last forever.

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Speaking about the feature, Zuckerberg previously said: "Over the last few years there have been many disasters and crises where people have turned to the Internet for help.

"Each time, we see people use Facebook to check on their loved ones and see if they're safe.

"Connecting with people is always valuable, but these are the moments when it matters most.

"Safety Check is our way of helping our community during natural disasters and gives you an easy and simple way to say you’re safe and check on all your friends and family in one place."

The Safety Check feature has also been activated
In the devastating aftermath of the attacks, several hashtags – including #PrayForParis – have been trending on social media.

And many users have shared a poignant painting of the peace sign incorporating the Eiffel Tower, France's most famous landmark.

The image, originally posted by French artist Jean Jullien, has racked up more than 53,000 retweets and 144,000 Instagram likes.

The hashtag #PorteOuverte – meaning 'open door' – was used by kind-hearted Parisians to offer victims a place to hide or stay.

However, some popular accounts have been slammed for ill-timed or offensive tweets and statuses.

Bookmaker Paddy Power apologised after a prescheduled tweet about a French racehorse sparked fury on social media.

West Wing actor Rob Lowe and former X Factor winner Sam Bailey were slated for calling for the closure of borders after the attacks.

And Jason Manford's Facebook account was suspended after the comedian branded the terrorists "f***ing scumbags" in a furious status.