What group from the north was shunned in the south for trying to take advantage
and, in some cases, rob people in the
south after the Civil War.

In the history of the United States, carpetbagger was a derogatory term applied by Southerners to opportunistic Northerners who came to the Southern states after the American Civil War, who were perceived to be exploiting the local populace for their own financial, political, and/or social gain.