Daniel Ready Opdyke, part of "Goon Squad," tortured two Black men.
Charges include civil rights conspiracy and obstruction of justice.
Victims endured stun guns, racial slurs, and forced ingestion of liquids.
Christian Lee Dedmon to be sentenced later.
Incident triggered by false complaint from a white caller.
Officers poured chocolate syrup, alcohol on victims' faces.
Hunter Elward put a gun in victim's mouth, causing serious injury.