I just prefer to call them 'traitors.'
Copperheads were taking actions that would have led to the victory of the south. What that meant was that northerners would have split from the south and that slavery would have continued in the south. Life would have gone on in the north pretty much as before, but there would have been two republics in north america, and undoubtedly trouble to follow.
Democrats, on the other hand, actively took actions to help a communist dictatorship in the Soviet Union in its efforts to establish a similar dictatorship in North America, and enslave us all. When they lost that battle, they were lost in the wilderness for a few years, but then found a new way to destroy our heritage and way of life--Islamic fundamentalism. Now, they have latched onto it as their latest way to bring down western civilization. If the Islamists succeed, we will all be dead or converted slaves to a deluded mohammedan barbarian horde, praying to their moon god and enslaving our women in a horrible servile existence.
They are far, far worse than copperheads, who were, after, Christian, American, and did not wish us to die or become Arabs.
Precisely.
The left (ACLU, Kerry, Hillary, Murtha, Pelosi, E.L.F., communists, etc) have more in common with Bennedict Arnold, than with this particular species of snake.
Personally, I think it's an insult to Copperheads everywhere.