People often obey a gevernment out of habit. Obviously habit is not something a new government has on it's side.
People hate a government which hurts them. Because people had time to adapt to old laws (murder illegal? work as potato farmer rather than assasin!) they are more hurt by old governments than new ones.
Whenever a country is 'liberated' either by external or internal forces, the liberators make all kinds of promises to all kinds of people. Some of these promises at least will be broken, causing members of the new ruling class to turn against eachother.
And often new governments lose the services of the most experienced police and propaganda men who worked for the old regime and our thus less able to defend themselves than established ones.
Explanation:
Roberto was feeling miserable because he did not get much sleep last night. He was looking tired and messy.
He ran to meet Maria, his friend at the mall who also saw Roberto in such a pathetic condition and comment on his appearance that he seems to have been come out of the laundry basket just now.
Roberto's condition was such that it make him look very tired and untidy. Maria compares him to the clothes kept in the laundry basket which is filly wrinkled and out of shape, in very dilapidated condition.
But Roberto was hurt by Maria's comment on him. Maria used harsh words on him which he did not like. Though Maria finally told that she was joking with him but it left Roberto with feeling bad he considers Maria to be his friend and did not expect such harsh comments from her.
The answer would be that stress rises from both the occurrences and our cognitive appraisal of them. Cognitive appraisal means that it is the personal understanding of a condition that eventually influences the degree to which the situation is professed as stressful.
