It has now been 18 years since the Al-Qaeda orchestrated terror attacks on the World Trade Centre buildings in New York that killed 2996 people. September 11, 2001, is a dark day in the United States history and the citizens of America remember the now deceased and in response they say that what happened all those years ago never lets us forget and it is something we can't forget. The people of America took to Twitter and Instagram to pay tribute to those that lost their lives and the heroes in the 9/11 attacks.

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 Tweets that were truly filled with a world of emotions:

@JessRyanUSA tweeted a video of Americans gathering at the 9/11 memorial and singing "God Bless America".

@alexaiono tweeted: "We owe it those we lost to remember and honor them" 

@Sept11Memorial tweeted: "In darkness we shine brightest."

When the World Trade Center collapsed on September 11, 2001, there were more than 300 of the heroes were dogs. 

Ryan Seacrest took to twitter too and tweeted: "Remember them today and every day. #NeverForget"

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Emotional tribute posts on Instagram

@carriedawayantiques posted this tearjerking message from a husband to his wife. 

 @9/11memorial posted: "Eighteen years ago, under clear blue skies, the unimaginable happened."

@whirllabee posted: "We only danced tango that day— for grief and rage."

@davis_no_excuses posted a photograph of smoke bellowing out of the Twin Towers with the #NeverForget.

@wladwig posted: Remembering 9/11. “Dedicated to those who fell and to those that carry on. May we never forget.”

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