It seems that Prince Laurent was showing the police. He told the press tjhat he was in favor of the police not working for one day, so people would realise what would happen without them. He and his wife posed with a policewoman between them for the cameras.
Several policemen and women were protesting in front of the cathedral after a collegue of theirs was killed last week in Schaerbeek. After the prince posed with the policewoman the protesters were cheering Laurent's name.