In Tarant there is a warehouse with angry lowwaged orcs. However, I heard you can start a revelution. I wish to do this quest, but can't. I've said everything I can to the Orcs, and everything I can to the Factory Foreman, but couldn't trigger the quest. Just a question, how do you start it?
Perhaps it's triggered after a certain part of the main story, perhaps it has to do with your persuasion and perhaps you can read the newspapers about Donn Throgg (spelling). You never get it when you arrive in Tarant for the first time. And you'll realise the quest is available when you see the copper outside the factory building.
The Orcs will start a rebellion of sorts on their own when you get back from Quintarra. At that point you can convince the Orc's leader to go back into hiding, surrender, or start a revolution.