It shall be unlawful for any person in a park to bring, or have in his possession, or set off, or otherwise cause to explode or discharge or burn, any firecrackers, torpedo, rocket, or other fireworks or explosives of inflammable material, or discharge them or throw them into any park area from land or a highway adjacent thereto. This prohibition includes any substance, compound, mixture or article that, in conjunction with any substance or compound, would be dangerous from any of the foregoing standpoints, except under the sponsorship of organized groups and with the permission of the director and/or the city council.
