This is my email to the American Embassy. I suggest you write your own.
My name is-----, and I want to know if my name has been registered by the Surveillance Detection Unit (SDU) in the SIMAS data base. Today Bjørn Erik Thon, the director of data security in Norway, stated in Aftenposten that anyone who has been at a demonstration outside the American embassy, should get in contact and demand answers. So, as a Norwegian citizen who has been part of numerous LEGAL demonstrations, i demand to know if my name has been ILLEGALLY registered by the Surveillance Detection Unit. If so, that is a violation against Norwegian laws and action will be taken.