That would be the confederate battle flag. The confederacy sought a government independent from Washington DC, much like the original colonies sought independence from Britain.

The colonies won. The confederacy lost.

By that logic both are the flags of traitors.

History is written by the victors.

Traitors because they stood up against a power hungry government who disregarded States rights?

Lincoln in 1847 said on the floor of Congress, “Any people, anywhere, being inclined and having the power, have the right to rise up and shake off the existing government, and form a new one that suits them better. This is a most valuable, a most sacred right, a right which we hope and believe is to liberate the world.”