Commemoration of a disaster is a valuable component of processes of grief. Ritual, community, places and monuments are importat aspects of commemoration ceremonies, which have to be realized as a combined action of the proper authorities and the persons concerned.
Ena Kasumovic (onaena) worked for Burobraak (Amsterdam) to create the design of the Impact guideline book called Herdenken. 

Burobraak: www.burobraak.nl

design; ArjanBraaksma & Ena Kasumovic, photo's; Remon van den Kommer