J Edgar Hoover
The report is worthless unless it's backed by reform of the laws they're misusing.
Look, none of this is new, it's a cycle we've seen before. A major perceived threat (terrorism/mafia) results in the creation of strong and uncontrolled powers by a police agency (FBI/ACPO), that results in individuals who would abuse such power seeking out roles in that agency (J Edgar Hoover / TBD), who then confuse their own internal fears with real threats to the country.
Hoover couldn't be sacked, he became so powerful that Presidents would go visit him first thing they got into office to seek his approval. The only way they finally got him out of office was he died, after that they set a 10 year limit of that role to prevent it happening again.
Does this sound familiar:
"According to documents declassified in 2007, Hoover maintained a list of 12,000 Americans suspected of disloyalty with the intention of detaining them and to do so by suspending the writ of habeas corpus."
Habeas corpus has been eliminated in all but name in the UK. You are compelled to help the police find something to prosecute you for, failure of that alone is a criminal offence, as we've seen with the Mr PGP case.