Section 27 of the Public Order and Security Act is unconstitutional because it permits blanket bans on all demonstrations for up to one month without discriminating between peaceful and potentially violent demonstrations. Such blanket or dragnet prohibitions are unfair, unreasonable, unnecessary and unjustifiable under section 86(2) of the Constitution. A limitation on fundamental rights that stereotypes and condemns all demonstrations in advance, regardless of their nature, purpose or circumstances, is irrational and imposes greater restrictions than necessary to achieve the legitimate purpose of preventing public disorder. The rights guaranteed by section 59 of the Constitution are rights to demonstrate and petition peacefully, with peacefulness forming part of the content of the rights themselves. Any limitation must be assessed holistically against the criteria in section 86(2), including fairness, reasonableness, necessity and justifiability in a democratic society based on openness, justice, human dignity, equality and freedom.