Any person who solicits any other person, or conspires with any other person to commit any crime against property or person with the specific intent to halt, impede, obstruct or interfere with the lawful management, cultivation or harvesting of trees or timber or with the lawful management or operations of agricultural or mining industries, if the act is performed to effect the object of the solicitation or conspiracy, shall be guilty of a felony; provided however, that any person who solicits any other person or conspires with any other person to stage a peaceful demonstration which is not designed, planned, or intended to involve the commission of any crime against property or person shall not be guilty of any crime under the provision of this section.