An assembly has the right to protect itself from annoyance by nonmembers, and its full authority in this regard can be exercised by the chair acting alone. The chair has the power to require nonmembers to leave the hall, or to order their removal, at any time during the meeting; and the nonmembers have no right to appeal from such an order of the presiding officer. However, such an order may be appealed by a member. RONR (11th ed.), p. 648, ll 14 - 22
All persons present at a meeting have an obligation to obey the legitimate order of the presiding officer. RONR (11th ed.), P. 645, ii 4-5
A council or board meeting is NOT a public meeting. It is a MEETING OF THE BOARD that is held in public. The purpose of the "public comment" period is to allow the board members to become informed about the views of the public.