On 11 September 2001, the 47-storey World Trade Center 7 skyscraper collapsed, 350ft away from the Twin Towers. It wasn't hit by aircraft, but caught fire as a result of the intense heat emanating from the Twin Towers, eventually causing the building's demise. However, conspiracy theorists have always maintained that the style of WTC 7's collapse is clear evidence of an inside job by the US government, who wanted to bring down the skyscraper owing to the fact that it contained highly classified government secrets. Many draw comparisons between WTC 7's collapse and controlled demolitions.

Activists will not let the issue go and a group called ReThink911 have paid to rent a 45-foot digital billboard on the corner of 42nd St and 8th Ave in New York, one of the busiest places in Manhattan. Between 8 September and 5th October, for fifteen seconds out of every two minutes the billboard will display the descent of World Trade Center 7, meaning that on the anniversary of 9/11, Manhattan residents will have to watch a skyscraper collapsing on a loop. The group expect that they'll gain 100,000 viewers per day and 'shed light' on the conspiracy.

In a statement, ReThink911 said: "The message will be simple and powerful, encouraging viewers to trust their instincts about WTC 7’s smooth, symmetrical downward motion,"

Check it out for yourself below: