(2) If the arrangement of a public meeting in the notified place will compromise the safety of people, cause considerable damage to the environment or damage to property, cause unreasonable inconvenience to bystanders, traffic or an event
pertaining to an international conference arranged by a public corporation or another event requiring similar security arrangements, the police may, after having negotiated with the contact person, move the meeting to another place
suitable in view of the purpose of the meeting.
(3) In addition, where the flow of the traffic so requires and after having negotiated with the contact person, the police may order the route of a procession to be altered so that the purpose of the procession is nevertheless not compromised by way of the route alteration.
3
(4) The police may undertake the measures referred to in this section without negotiating with the contact person, if the contact person cannot be reached.