Rule of Law
Data collection on private citizens seems to be quite the thing after GCHQ was recently criticised.
https://www.theregister.com/2022/01/10/ipco_report_2020/
See also:
https://www.theguardian.com/world/2022/jan/10/a-data-black-hole-europol-ordered-to-delete-vast-store-of-personal-data
Looks like every 'law enforcement' organisation really wants to be above the law themselves. trouble is, when Robert Mark was appointed to a senior position in the Metropolitan Police he sated that the Palin-clothes division of the Met was "the most corrupt organisation in London". So these agencies really do need to consider how a corrupt officer or employee might behave with access to all that data, and how to reduce the chances of internal corruption (not holding my breath).