In the wake of the suspected terror attack that killed at least 19 and injured about 50 on Monday (May 22) (Tuesday Singapore time), social media was quickly galvanised to help the scared and stranded in the English city of Manchester.
Residents and businesses both used the hashtag #RoomforManchester on Facebook and Twitter to offer food, shelter, warmth and transport to those stranded in the city.
This is but the latest example of how people used social media to aid those in mass incidents and attacks.
As far back as 2008, Indians on Twitter sent pleas for blood donors to help save the casualties of the Mumbai terror attacks, reported CNN.
And as many in Europe reeled in response to the Charlie Hebdo shooting in January 2015. Some 3.4 million tweets of #JeSuisCharlie were sent within 24 hours of the attack, according to The Guardian, to show solidarity with the casualties in Paris and beyond.
"Je suis Charlie" is French for "I am Charlie". And the slogan spread rapidly across the Internet.
Similar calls for solidarity and support came when Turkey fell victim to terrorist attacks in 2016, such as the June explosions and gunfire at Istanbul's Ataturk airport. That particular rampage killed 41 people, reported The Guardian.
Less than a year after the Charlie Hebdo shootings, when 130 victims lost their lives in the same city during the November 2015 attacks, Parisians rallied around the hashtag #porteouverte - French for "open door" - to signify their willingness to shelter stranded people.
The tweet was started by French journalist Sylvain Lapoix, reported The Huffington Post, with the hashtag eventually being shared hundreds of thousands of times.
The above tweet, translated from French, reads: "Those who can open their doors, geotag your tweets and use #PorteOuverte to indicate safe places. #shooting #Paris"
The hashtag #rechercheParis was also used to search for missing friends and family, reported Forbes.
#porteouverte was used once again during the Brussels bombings of March 2016 to shelter those stranded in the Belgian capital, and once again a few months later in July during the Nice terror attack in France, when a truck driver mowed down and killed 86 people.
Less than two weeks later the German translation #OffeneTuer began trending when the Munich mass shooting took place in Germany.
According to the BBC, a Germany Muslim newspaper, Islamische Zeitung, tweeted that all mosques in the city would remain open overnight for those who required refuge.
When the Westminster terror attack occurred in March this year social media lit up once in defiance and solidarity with the hashtags #WeAreNotAfraid and #PrayForLondon.
