Eastern Magistracy found Alexandra Wong, 65, guilty of common assault, after she pushed the security guard when she was asked to stop for a security check at the lobby.
Magistrate Edward Wong said the case was serious, as the defendant’s assault was intentional and wasn’t out of self-defence.
The court must protect its staff, especially security guards who are carrying out frontline duties, the magistrate said.
The defendant is well-known for her frequent participation in pro-democracy protests and appearances outside courts to show support for those on trial. She is usually seen waving a British flag.