shows that he or she became a member when it was not a terrorist organisation and that he or she has not since he or she became a member taken part in any of its activities at any time while it was a terrorist organisation. (4) Without prejudice to the right to adduce evidence in rebuttal, any person who imports, sells, distributes, manufactures or is in possession of any firearm, explosives or ammunition without a valid licence or reasonable excuse shall be deemed to be engaged in acts of terrorism. (5) The Minister responsible for internal security may, with the prior approval of the Cabinet, declare any organisation engaged in or carrying out acts of terrorism to be a terrorist organisation for the purposes of this section. (6) In this section, “terrorism” means the use of violence or a threat of the use of violence with intent to promote or achieve political ends in an unlawful manner and includes the use of violence or a threat of the use of violence calculated to put the public in such fear as may cause discontent against the Government. 27. Promoting war on chiefs, etc. Any person who, without lawful authority, or by reason of his or her office, carries on, or makes preparation for carrying on, or aids in or advises the carrying on of, or preparation for, any war or warlike undertaking with, for, by or against any chief, body or group of persons commits an offence and is liable on conviction to imprisonment for life. 28. Time within which to commence prosecution. No person shall be tried for an offence under section 23, except an offence under section 23(1)(b), 24, 25 or 27, unless the prosecution is commenced within five years after the commission of the offence. 29. Aiding soldiers or policemen in acts of mutiny. Any person who— (a) aids, abets or is accessory to any act of mutiny by; or (b) incites to sedition or to disobedience to any lawful order given by a superior officer, any noncommissioned officer or member of the armed forces of Uganda or