Mr. Sethi, learned counsel for the appellants, has raised four contentions: (i) Any right of private 604 defence of property which Harphool had against the offence of criminal trespass committed by the appellants ' party, had ceased when the criminal trespass was over or when the trespassers indicated their intention to cease the criminal trespass; (ii) If one of the rioters causes injury for which the other rioters are to be liable under section 149, I.P.C., the injury must have been caused in prosecution of the common object; (iii) An assembly ceases to be an unlawful assembly after the completion of its common object and only that member of the unlawful assembly would be liable for any criminal act committed later, who has actually committed it; and (iv) The learned Judges of the High Court misdirected themselves in raising certain inferences from the facts found.