Legalities Matter Not To The Green Lantern!
The Green Lantern gets involved in a slavery ring, and successfully busts them. He then decides to take an interest in the court case. However, the “star witness”, one of the henchmen of the bad guy – a fellow named Karnes, decides not to rat.
I’m no lawyer, but it seems to me a masked man coercing testimony in front of the judge and jury are grounds for an immediate mistrial.