Certainly the original complaint is the wild card.
I would suggest to anyone who is interested to study the difference between a lawful detention and what level of suspicion is needed for it and how that differs from a consensual encounter.
Law enforcement will often participate in a consensual encounter with some individual who seems out of place in a neighborhood for instance. The vast majority of the time the subject will comply and will answer the officer’s questions. In a consensual encounter, however, the subject is free to leave and does not have to answer the officer’s questions. But that is a relatively rare event that someone would do that because they don’t want to be rude or are scared to upset the officer. When it does occur, that is when we see the officer often overreacting and operating outside the bounds of legal authority.