The leader of any government such as Boris Johnson MUST not wear a face mask in making announcements because otherwise, any news agency can mute his/her voice and replace it with something else! It's political kidnap and manipulation or simply coup to say the least! Citizens must be able to see clearly their Government Leader's lips when he/she speaks! This way, no one can cover up with a voice over! So, Carrie Lam is right this time!