Terrorism and Separatism

Do you remember the incident of Cakalele dance which had been done by separatist movement?
To begin with, on Friday 29 June 2007, the separatist movement put out the flag of RMS -South Maluku Republic- in front of the president of Indonesia.
The incident took place at the anniversary of Keluarga Nasional, Ambon. Then, the same incident also had been done by OPM, the activist of OPM shouted that they wanted to separate from Indonesia.
The activity of separatist movement rise many questions:
Why the separatist movement can grow well? , and why it is difficult to solve? Etc.
Those questions must be answered on our own.