(1) A person who forcibly prevents or obstructs the making of any order commanding the persons engaged in a riot or assembled with the intention of committing a riot to disperse, is liable on conviction on indictment to imprisonment for 10 years.
(2) Where the making of the order is prevented under subsection (1), the person who, knowing that it has been so prevented, takes part or continues to take part in the riot or assembly is liable on conviction on indictment to imprisonment for 5 years.