Is there such thing as a 'just cause'?

Just cause is often a matter of interpretation by the courts or arbitrators. The interpretation can exempt someone from a wrong doing, in this case terrorism. Then the incident(s) could be named as acts of freedom instead of oppression. Just causes can range from: political, ideological, or religious although not all of these reasons for making a statement are in fact just.

The Oklahoma Bombing, was done for religious reasons yet it was not just. After the Waco incident where government officials went into a cult many died and Timothy McVeigh was outraged and set out to kill people for it. No peaceful goal could be achieved from that, just destruction and a settled mind. That is not a just cause. The immediate affects were 168 deaths, which gained the people of Texas Waco no respect.

Nelson Mandela and the ANC could be a justified incident however because they were fighting after they were oppressed because of racism towards them. Which allowed in the long term a more equal government as Nelson Mandela was freed from prison and became the President of South Africa.
So to conclude, there is such thing as a just cause. Although sometimes it’s hard to find the fine line between the two, the judgement can be made.