Civil disorder, also known as civil disturbance or civil unrest, is an activity arising from a mass act of civil disobedience (such as a demonstration, riot, or strike) in which the participants become hostile toward authority, and authorities incur difficulties in maintaining public safety and order, over the disorderly crowd. It is, in any form, prejudicial to public law and order. Whether to refer to this as disobedience, of course, is dependent upon positionality, or one's inter-subjective perspective. The following is based on the perspective of the US Army, given the abundance of citations from this source.
Civil unrest flared up in Nigeria in 1993, in an unprecedented civilian challenge to the military following the rejection of the presidential election results by the Nigerian military leader Ibrahim Babangida.