Whenever a riot is committed for the benefit or on behalf of any person who is the owner or occupier of any land respecting which such riot takes place, or who claims any interest in such land, or in the subject of any dispute which give rise to the riot, or who has accepted or derived any benefit therefrom, the agent or manager of such person shall be punishable with fine, if such agent or manager, having reason to believe that such riot was likely to be committed or that the unlawful assembly by which such riot was committed was likely to be held, shall not use all lawful means in his power to prevent such riot or assembly from taking place and for suppressing and dispersing the same.