Demonstration is one way to express opinion in public. But demonstrations
sometimes become uncontrolled and adverse to the society if the actions of
anarchism such as vandalism, maltreatment, and the casualties. The writing of
this law aims to determine the criminal responsibility againts the perpetrators of
anarchistic demonstrations. The research method used in the writing of this law is
normative law research method. This normative legal research requires
secondary data consisting of legislation, books, internet, and interviews with
resource persons. The conclusions of this research are in public opinion which
among others are demonstration, parade, general meeting, and speeches in
accordance with the provisions of Law Number 9 Year 1998 regarding
Independence of Opinion in Public. In conducting the demonstration activities
that must be performed first is to make a permit to the Police that will be the site
of the demonstration activities. After the requirements are met, it can be held by
the security of the local police force. Then if there is an anarchy in the activity of
the demonstration, then the responsible is the coordinator and the perpetrator of
the demonstration who commit acts of anarchism such.