"While platforms including Twitter Inc. and YouTube said they moved fast to scrub any content related to the incident from their sites, people reported it was still widely available hours after being first uploaded to the alleged shooter’s Facebook account. The first-person view of the killings in Christchurch was easily accessible during and after the attack -- as was the suspect’s hate-filled manifesto. Footage was still up on Google’s YouTube almost 12 hours later. 'Once content has been determined to be illegal, extremist or a violation of their terms of service, there is absolutely no reason why, within a relatively short period of time, this content can’t be eliminated automatically at the point of upload,' said Hany Farid, senior advisor to the Counter Extremism Project and a computer science professor at the University of California, Berkeley. 'We’ve had the technology to do this for years.'"