These events form the worst part of Indian politics since independence. Her rise to power was not due to her personality or skill. She was simply the daughter of Nehru, the first prime minister of India and a close aide of MK Gandhi.
[1] http://en.wikipedia.org/wiki/The_Emergency_(India)
[2] http://en.wikipedia.org/wiki/The_Emergency_(India)#Sikh_oppo...
[3] http://en.wikipedia.org/wiki/Operation_Blue_Star
[4] http://en.wikipedia.org/wiki/Assassination_of_Indira_Gandhi
[In the comparison her daughter-in-law seems so stoic and regal with a clean past, but supposedly(not guilty till proven) too corrupt to...]
She successfully exhibited the second trait, when she was was done for in a fair election, by imposing emergency rule over India - which essentially means what a coup-d'etat does to a democracy.
PS. Thatcher was not born a Baroness. So, she accepted it later it seems. Well, unlike most other parts of world them Brits still love their royals! Good going :-)