https://www.reuters.com/article/us-internet-extremists/at-u-n-britain-to-push-internet-firms-to-remove-extremist-content-quicker-idUSKCN1BV0CL

The leaders of Britain, France and Italy will push social media companies on Wednesday to remove "terrorist content" from the internet within one to two hours of it appearing because they say that is the period when most material is spread.