A security guard is asked by a police officer to assist in containing a crowd at a public event. Under which section of the Criminal Code are citizens generally protected when assisting a peace officer in the performance of their duty?

1. Section 494 - Arrest without warrant by any person.
2. Section 129 - Offences relating to public order.
3. Section 34 - Defence of person.
4. Section 25 - Protection of persons acting under authority.