The cause of Antigone's civil disobedience is the civil war and
fighting between the two brothers. She doesn't think it's fair that
one brother got all the proper burial rights while the other was just
left to rot. It shows her dedication and love for her family when she
gives him a burial service. Creon is more in to his new power with the
law than he is with his family. He says that he is the law and law is
above kinship, showing how little he cares about the girls. I think
Antigone is justified because she does what she thinks is right for
her brother, and takes the responsibility for it. She doesn't want her
sister to die with her because she didn't do anything, and she was the
one that took the risk for her family.