well as a USA citizen, from multiple generations of supporting a plurality of views, it is distressing to see the worst behavior of police and FBI, commented upon as if "that is the way the USA is!" .. and strictly from a word-meaning point of view "disingenuous" means I am trying to deceive or knowingly making false statements, which is not the case at all.. we are likely to agree on several points here.. hard to make comments that do not have enough disclaimers, on these large topics
When it comes to issues of life and death or liberty, we should use the worse case as the measure. For example: oh this medical intervention kills people 15% of the time. No matter what that can never be understated.
The FBI is/was involved as were the fusion centers which were originally setup as part of a joint taskforce to combat terrorism. The fusion centers were developed to integrate US intelligence with local policing.
NYPD, a "local" city police department, has a huge terrorism counterintelligence department, one that surveils internationally and duplicates a lot of the federal intelligence infrastructure.