In order to understand the Libyan’s anger at him, we don’t have to analyze his whole political career. The way he behaved during the uprising amply demonstrates all: first of all, he branded the freedom fighters as ‘rats’ and said that they were all on drugs; then he repeatedly said that his people loved him and would protect him in the event of his life being in danger; then he said about the countries that were going to benefit from Libyan oil – of course, those who chose to be quiet about his crackdown; then he declared a few ceasefires, only to break them blatantly a day or so later.
Moreover, the Libyans were forced to listen to his boring monologues and hollow rhetoric, day in day out. Then, there was his Green Book – the blueprint for good governance and prosperity – which, in fact, is a collection of trivial thoughts some of which were not even worth the paper they were written on. Against this backdrop, the excesses of his offspring, ranging from violent behaviour to squandering public money, may have been the last straw for the ordinary Libyans who thought ‘enough was enough’.
The erratic behaviour of Col Gadaffi which bordered on self-ridicule reinforced the general view held by the international community about Col Gadaffi: unpredictable, vindictive and vicious individual who had nothing but contempt for public opinion.

Green book:

http://www.geocities.com/Athens/8744/readgb.htm

The Libyans saw their former leader wasting oilwealth on useless pet projects, ranging from chemical weapon factories to nuclear weapons – often inventing an imaginary bogeyman. The Libyans were puzzled to note that almost 40% of the population were jobless and live on less than $2 a day, despite the oil revenue which amounted to billions of dollars. This led to the assumption that member of Gadaffi family and his cronies were siphoning off the revenue towards offshore accounts while pulling wool over public eyes.
When public anger was directed at him and his inner circle, Col Gadaffi hit back at the public by branding them as traitorsand held public rallies to show that he still had thebacking of people, who chose to throw fists in the air in unison with theequivalent gestures of their beloved leader. He was of the view that the public has no complaints whatsoever to make against his rule.

He was put into power via a revolution fighting against those at the time and the same reason and revolution who took him out of power 40 years later.....

Gaddafi became the de facto leader of the country on 1 September 1969 after leading a group of young Libyan military officers against King Idris I in a coup d'état. After the king had fled the country, the Libyan Revolutionary Command Council (RCC) headed by Gaddafi abolished the monarchy and the constitution and proclaimed the new Libyan Arab Republic with the motto "freedom, socialism, and unity". [3]
After coming to power, the RCC government initiated a process of directing funds toward providing education, healthcare and housing for all. The reforms, though not entirely effective, had had their effect. Public education in the country is free and primary education is compulsory for both boys and girls. Medical care is also available to the public at no cost but providing housing for all is a task the RCC government has not been able to complete yet. [4] In 1977, Gaddafi renamed the Libyan state to Socialist People's Libyan Arab Jamahiriya , where Jamahiriya is a term coined by Gaddafi, [5] usually translated as "state of the masses". Under Gaddafi, per capita income in the country rose to more than US $11,000, the fifth highest in Africa. [6] The increase in prosperity was accompanied by a controversial foreign policy, with increased political repression at home. [3] [7]
During the 1980s and 1990s, Gaddafi openly supported international terrorism as well as independence movements, including Nelson Mandela's African National Congress, the Palestinian Liberation Organization , the Irish Republican Army and the Polisario front , which led to a deterioration of Libya's foreign relations , culminating in the US bombing of Libya in 1986 . After the 9/11 attacks attacks, however, Gaddafi began to distance himself from terrorism, and during the 2000s, Libya's international relations were mostly normalized, the US rescinding its designation of Gaddafi's Libya as a state sponsor of terrorism in June 2006.

http://www.fox13now.com/news/kstu-qadaffi-unpredictable-to-the-end-muammar-qadaffi-ruled-libya-for-decades-20111021,0,503456.story

End of certainties in the Arab world

http://www.dailypioneer.com/component/content/article/399-the-cutting-edge/15156-end-of-certainties-in-the-arab-world.html

actually it was a coup d'état by him and a few other Officers,that for some strange reasons succeeded!
mainly because King Idris was out of Country!

http://en.wikipedia.org/wiki/Idris_of_Libya

http://en.wikipedia.org/wiki/Muammar_al-Gaddafi

No Revolution by a long shot!

http://en.wikipedia.org/wiki/Libyan_coup_d%27etat_%281969%29#Coup_d.27.C3.A9tat_of_1969