This has already been explained to you several times with more than adequate documentation but you continue to apparently ignore the information. Here's where you're wrong:
1) They were not permitted to make a citizens arrest because they did not witness a felony being committed. Trespassing is not a felony.
2) They could have firearms in their vehicle but that doesn't allow for the USE or threat of a weapon. The shooter was not defending himself once he confronted the jogger with the shotgun in any manner. Given that the jogger was unarmed and being chased/yelled at/threatened, the shooter was in fact the aggressor and the jogger had every right to flea or defend himself including attempting to disarm the shooter.
3) Georgia Code Title 16. Crimes and Offenses § 16-5-1. A person commits the offense of murder when he unlawfully and with malice aforethought, either express or implied, causes the death of another human being. The GBI correctly charged the two with murder but this doesn't mean the ultimate charges may be some level of manslaughter. Bye!
You're the master at getting it wrong
Citizen's Arrests
As a private citizen, you have no authority to arrest anyone with a warrant. Without a warrant,
you may arrest anyone who commits a mis-demeanor or a felony in your presence or with your immediate knowledge. A citizen's arrest occurs when a citizen prevents a suspect from leaving a scene. Citizen's arrest most often happens in cases like shoplifting, when the store's manager detains the suspected offender. However, as the following example shows, the manager or employee cannot make such an arrest in every case.
In
Winn Dixie Stores Inc. v. Nichols, 205 Ga. App. 308, 422 S.E. 2d 209 (1992), a Winn Dixie customer complained to management that another customer stole her wallet. The court held that the limited rights of merchants to detain or arrest a person reasonably believed to have committed a shoplifting offense do not authorize a merchant to detain or arrest individuals accused by store patrons of committing crimes against other patrons. To make the arrest, an employee would have had to actually see the criminal act committed. Therefore, it was ruled that management had no authority to arrest the alleged criminal.The court suggested that the only person who could have made the citizen's arrest was the robbed customer herself.
When making a citizen's arrest, a person may not use more force than is reasonable to make the arrest. Deadly force is limited to self-defense or to instances in which such force is necessary to prevent certain felonies.
It must be stressed that the right of private citizens to make a citizen's arrest is limited. They cannot arrest people for violating local ordinances or regulations because these violations are not technically crimes as defined by state law.Therefore, as a private citizen, you would not have the authority to arrest a person who is creating a disturbance by making too much noise. In addition, a private person can only make a citizen's arrest for the purpose of bringing the suspect before a judicial officer
The courts have held that possessing more drugs than a person can reasonably be expected to take for personal use indicates that the person intends to sell the drug. The courts also look at other factors, including whether the accused had a large sum of cash on him or her. Another factor is whether the drugs are in individual packages at the time of the arrest. For example, 10 hits of crack cocaine might be packaged in 10 vials, each containing 1 hit.