The handling of the events of 22/23 July by the local police in Munich is a very positive example on how such situations should be dealt with.
The management of fear: such acts (of terrorism) are aimed at spreading fear not only within the people directly concerned, but also towards everyone watching the happenings live in TV or following on social media platforms
The Munich police speaker (Marcus da Gloria Martins) did a textbooklike job regarding fear management:
Confirm and deny rumors as quickly as possible
Keeping one tone of voice and very calm
No news is also news: a lack of communication would have helped the spread of rumours/speculations
There has been only one attacker, a 18 years old German-Iranian Citizen.
Still no clear motive stated.
Perpetrator presumably had a mental-health problem.
Current facts (1:30 am CET, 23 July):
CNN is reporting one of the attackers shouting “Allahu Akbar” indicating an Islamic origin of the attacker(s).
German media is mainly showing a video of one of the attacker(s) shouting “I am German”, interpreting this as a possible right extremist link.
At the current stage it is to early to make any reasonable assumptions. German media is ignoring the CNN report and the aspect of a possible involvement of converts, while the CNN report is based on one sole witness.
Responding to 9/11: Counterterrorism Policy in the 21st Century
9/11 was a devastating attack that required a comprehensive response from the United States. This course will examine post-9/11 U.S. counterterrorism policies regarding the use of military force, law enforcement and intelligence collection, and domestic security. We will trace these policies to the current day and assess their legality, ethics, and efficacy in counteracting terrorism.