You should give way to processions. A 17th of May parade is a typical example of a procession. The traffic rules also states that you must give way for:

Emergency vehicles with flashing blue lights

Trams and trains

Pedestrians in groups under the supervision of a leader, processions, funeral processions, convoys of military vehicles or convoys of civil defence vehicles

You should also be considerate of pedestrians and stop or slow down if necessary, but you are not required to give way. You should also be considerate of pedestrians and stop or slow down if necessary, but you are not required to give way.