This is indeed a shocker!
One of the most reputed actors of the Hindi Film Industry, an individual who is respected by the masses and is vocal various causes is being accused of instigating the killing of Sikhs during the 1984 riots. Ms. Jagdish Kaur, a prime witness of the riots is accusing him of such a heinous crime.
A bit of background information: in 1984, post the assassination of PM Indira Gandhi by her Sikh bodyguard, Satwant Singh and Beant Singh, there was a mass uprising in Delhi which resulted in extremely bloody riots with Sikhs being the target.
In an interview with Times of India in 2011, Ms. Jagdish Kaur stated that her family was not a part of the political uprising in any manner. However, as Sikhs were being targeted, she watched her innocent husband and sons being killed by a mob of people who invaded her house in West Delhi on November 1, 1984. Her three brothers were burned alive. She is accusing Mr. Bachchan as she recollects watching the relay on Doordarshan at the time following the death of Indira Gandhi, Mr. Bachchan angrily stating, "Khoon ka badla hum khoon se lenge!", which was a live telecast.
After the tragic incident, a U.S. based Sikh human rights group lodged a formal complaint in Australia against Mr. Bachchan for participating in provoking the riots. This is was done in Australia instead of India or the United States as Australia's Criminal Code 1995 declares that Australian courts have jurisdiction in other nations whenever there is a case of human rights violation and crimes against humanity.
Ms. Kaur painfully states that any mention of Amitabh Bachchan or even his work reminds her of the horrific riots of 1984.