Sudan is a multi-ethnicity and mulit-religion country. There were African Muslims and African Christians, and Arabic Muslims and Arabic Christians.
The government of Sudan was the Muslim Government. People in Sudan were forced to follow the Sharia Law. Some of these law included people getting punished for drinking alcohol and women being banned for wearing revealing clothes.
When Christians were punished for these laws, they were outraged. Christians did not believe in following the Muslim ways and therefore would refuse to follow the Sharia law.
All different types of Christians rebelled and violence broke out. Christians wanted to be respected for their beliefs and wanted rights to follow their own rules.
Muslims fought back for their beliefs and to support their government. They started their own riots. Both religions tried to prove their point and stand up for their beliefs.