What is the fine-grained topic of the following text: "Sitting alongside the information already released about the former Minister's role in targeting an innocent public servant, the SIS OIA releases, the campaign against the Serious Fraud Office and Financial Markets Authority, and the Bronwyn Pullar affair, we now have a clear picture of the abuse of power and knowledge that has been going on. Only return the topic.
Abuse of power and knowledge by a former Minister