Lincoln quotes are big with the Maoists.
http://www.etext.org/Politics/MIM/faq/violence.html
MIM = Maoist International Movement
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.
Abraham Lincoln, Speech in the United States House of Representatives, Jan. 12, 1848
This country, with its institutions, belongs to the people who inhabit it. Whenever they shall grow weary of the existing Government, they can exercise their constitutional right of amending it or their revolutionary right to dismember or overthrow it."
Abraham Lincoln, "First Inaugural Address"
What was the South's just cause?