(3) For the avoidance of doubt, it is declared that nothing in this section shall prevent the doing of any thing by lawful constitutional means directed at (a) the correction of errors or defects in the system of Government or Constitution of Zimbabwe or the administration of justice in Zimbabwe; or (b) the replacement of the Government or President of Zimbabwe; or (c) the adoption or abandonment of policies or legislation; or (d) the alteration of any matter established by law in Zimbabwe. 21 Concealing treason Subject to subsection (3) of section twenty, any person who is a citizen of or ordinarily resident in Zimbabwe and who, knowing that any other person (a) has done or attempted to do; or (b) is doing or is attempting to do; or (c) intends to do; whether inside or outside Zimbabwe, any act with the intention of overthrowing the Government, does not inform an official as soon as is reasonably possible after acquiring such knowledge, shall be guilty of concealing treason and liable to a fine up to or exceeding level fourteen or imprisonment for a period not exceeding twenty years or both. 22 Subverting constitutional government (1) In this section “coercing” means constraining, compelling or restraining by (a) physical force or violence or, if accompanied by physical force or violence or the threat thereof, boycott, civil disobedience or resistance to any law, whether such resistance is active or passive; or (b) threats to apply or employ any of the means described in paragraph (a); “unconstitutional means” means any process which is not a process provided for in the Constitution and the law. (2) Any person who, whether inside or outside Zimbabwe (a) organises or sets up, or advocates, urges or suggests the organisation or setting up of, any group or body with a view to that group or body (i) overthrowing or attempting to overthrow the Government by unconstitutional means; or (ii) taking over or attempting to take over the Government by unconstitutional means or usurping the functions of the Government; or (iii) coercing or attempting to coerce the Government; or (b) supports or assists any group or body in doing or attempting to do any of the things described in subparagraph (i), (ii) or (iii) of paragraph (a); shall be guilty of subverting constitutional government and liable to imprisonment for a period not exceeding twenty years without the option of a fine. 23 Insurgency, banditry, sabotage or terrorism (1) Any person who, for the purpose of (a) causing or furthering an insurrection in Zimbabwe; or (b) causing the forcible resistance to the Government or the Defence Forces or any law enforcement agency; or (c) procuring by force the alteration of any law or policy of the Government; commits any act accompanied by the use or threatened use of weaponry with the intention or realising that there is a real risk or possibility of (i) killing or injuring any other person; or (ii) damaging or destroying any property; or (iii) inflicting substantial financial loss upon any other person; or (iv) obstructing or endangering the free movement in Zimbabwe of any traffic on land or water or in the air; or (v) disrupting or interfering with an essential service; shall be guilty of insurgency, banditry, sabotage or terrorism, whether or not any purpose referred to in paragraph (a), (b) or (c) is accomplished, and be liable A. where the act of insurgency, banditry, sabotage or terrorism results in the death of a person, to be sentenced to death or to imprisonment for life; B. in any other case, to imprisonment for life or any shorter period.