http://www.newsweek.com/section-230-us-law-explained-donald-trump-terminated-tweet-1550757

An ageing U.S. law that facilitated the rise of Facebook, Twitter and YouTube has once again been thrust into the spotlight this week after President Donald Trump said that it should be "terminated" over national security concerns.

The legal provision, Section 230 of the Communications Decency Act of 1996, is facing growing opposition from both sides of the political divide, despite claims from social media and tech giants that it is critical to their continued existence.