Aflack and Damon self admit that the entire narrative is fiction past the opening setup. The events in the film don't purport to be true.

However, before having them burn down a building and murder a supervisor and a fed, the film sets up an establishing sequence based on real life events that clearly tie the two fictional characters to two real people.

I get ACAB, but like, it's kinda wild to make a film where you're clearly representing real-life normal people, and then have them do a bunch of heinous stuff that they're not even remotely accused of doing.

I see no paywall, and I've loaded it a few time (though you do have to scroll past a huge ad to keep reading, which is annoying.) It's way more than 5 paragraphs though.

From the article:

Although Smith and Santana aren’t named in the film and weren’t involved in its production, the lawsuit claims that Santana was serving as the lead detective assigned to the real case, and Smith was the sergeant who supervised the investigative team. The film’s inclusion of real details about the case gives the impression that the characters are based on the plaintiffs, the suit said.

This, the lawsuit claims, has given friends, family members and colleagues the impression that the plaintiffs committed the criminal acts that appear in the film, which include (SPOILER ALERT) conspiring to steal seized drug money, murdering a supervising officer, communicating with cartel members, committing arson in a residential neighborhood, endangering the lives of civilians, repeatedly violating core law-enforcement protocols and executing a federal agent rather than making an arrest.