When is it necessary for citizens to rebel against the goverment

Citizens can rebel against their government at any time, they wish too. However, their reasoning must be justifiable. Some of the most common reasons why people rebel against their government include:

1) When their government is full of corruption.
2) If the government is abusing its positions and power
3) If the governments actions and choices are unfair and worse the countries       state and international status.
4) If the government is involved with terrorism and illegal activities.
5) If the government doesn't deliver on their promises.
6) If the government goes against basic human rights, no matter who the person is or their nationality.  

The dethroned emperor!