Will the McCloskeys (Gun Couple) prevail over the Prosecutor Gardner?

This couple came outside after rioters busted down a gate, and held about 300 protestors, some also armed with guns from ransacking their home. Their guns were seized by the police by order of Kim Gardner, who charged the couple for threatening a peaceful protest with deadly force.

The particulars is that the couple did not have any police help during the riot. Many of the riots days earlier had building set on fire, and violence in various areas of the city. The couple said they feared the mob or rioters were there to destroy their property. The local prosecutor felt like the couple were the aggressors, and criminals.

One of the guns, the pistol once taken to the crime lab, to determine if it was lethal, was actually deactivated. The firing pin was pushed back, and the spring placed in-front of the firing pin. Gardner swore the evidence she took in, before checking was lethal. Her assistant had the pistol repaired by the crime lab, to make the statement Gardner swore to correct with her statement. Effectively tampering with the evidence.

Do you think the McCloskeys will pervail?