The perception of the two Bay Area NFL franchises on this board is a parody of itself.
Here, the Raiders are the criminal element. They are a bad franchise run by bad people, and their fans made the money to pay for their tickets via criminal activity of the lowest, most violent order.
The 49ers are the elitist franchise. Their fans are hard working, ethical and philanthropic captains of industry. They don't tailgate, they have catered affairs in private tents or in condominiums with a view of the field between the 20 yard lines.
Desean to the 49ers would be a genius move here, because it would make Jackson a better person automatically. DJax to the Raiders, horrible move for him because the Raiders are horrible people.