During the blitz and the Battle of Briton it was required of everyone to cover up the windows to make it more difficult for the German bombers t poo drop their payload of death on Britain’s population.
If the same principal was applied to cities and countries that suffer a terror attack like the resent attacks in France, would it not make sense to apply the same principal as mentioned above with slight variations I.e. total shutdown of the media for the period required to apprehend the guilty, and deprive the terrorist organisations, the opportunity of using the shock and fear generated by the attacks as a tactic to gather support for their cause.
Secondly, all communication other than emergency services to be shut down to prevent the news spreading across social media, and deprive the terrorist using this as a tool to spread their message.
Allow internal communication but international communications must be none existent.
The reasons for this act mentioned above can be used in another far effective way by cutting off communication you are not only stopping the fear factor, but also knowing that terrorism will still try and get the message our will allow the security forces to pin point the attempts made by the terrorists to communicate there actions internationally, and help to quickly apprehend the guilty.