The regulation "addressing the dissemination of terrorist content online" will come into force shortly after publication in the EU's Official Journal -- and start applying 12 months after that. This means that providers serving users in the region must act on terrorist content removal notices from Member State authorities within one hour of receipt, or else provide an explanation why they have been unable to do so. 

There are exceptions for educational, research, artistic and journalistic work -- but it looks like lawmakers aiming to target terrorism propaganda being spread on online platforms like social media sites.

The types of content they want speedily removed under this regime includes material that incites, solicits or contributes to terrorist offences; provides instructions for such offences; or solicits people to participate in a terrorist group.

Material posted online that provides guidance on how to make and use explosives, firearms or other weapons for terrorist purposes is in scope.

Concerns have been raised over the impact on online freedom of expression -- including if platforms use content filters to shrink their risk, given the tight turnaround times required for removals.  We guess there are those who fear that the take down notices might be applied to white people and neo-nazis rather than Muslim terrorists.