LOL the hand wringing of this social media generation. Time to fire up MeTV. Understanding a common TV trope would help these people. Often private detectives Rudy G. (McMillan and Wife, James Rockford, Remington Steele, etc) while helping their client end up aiding law enforcement or oversight like the Executive Branch or Nunes( McCloud, McQ, Cannon, Hill Street Blues, etc). The detectives and police often use criminal informants (Parnas) to uncover the activities of the bigger fish. Oh LE can squeeze the little fish but PI usually have to pay cash. Letting you know so you wont be shocked to find out Rudy probably paid the guy too.
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