65. Being capable of encouraging or assisting
(1) A reference in this Part to a person's doing an act that is capable of encouraging the commission of an offence includes a reference to his doing so by threatening another person or otherwise putting pressure on another person to commit the offence.
(2) A reference in this Part to a person's doing an act that is capable of encouraging or assisting the commission of an offence includes a reference to his doing so by -
(a) taking steps to reduce the possibility of criminal proceedings being brought in respect of that offence;
(b) failing to take reasonable steps to discharge a duty.
(3) But a person is not to be regarded as doing an act that is capable of encouraging or assisting the commission of an offence merely because he fails to respond to a constable's request for assistance in preventing a breach of the peace.