These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Adaptation Displacement - Is it based on a book? (applies for both, as the book received a sequel in time for Tropa 2)
Complete Monster: Major Rocha of the sequel The Enemy Within begins his reign of terror in Rio's slums by forming a militia and slaughtering anyone who won't give his men a cut of the profits. Any who resist the militia are executed, along with any witnesses. When Mathias, one of the Cowboy Cop heroes is getting info from a drug dealer, Rocha murders the dealer- and then shoots Mathias in the back. When two journalists get too close to the truth, Rocha tortures them, kills one, then has the other raped and killed before burning the bodies. when the main Anti-Hero gets too close, Rocha tries to kill him as well. A brutal thug of a human being, Rocha eclipses anyone else in the films for his violence and corruption.
Crowning Moment of Awesome - Regardless of what you think of Captain Nascimento's techniques, he definitely qualifies as a walking one.
The sequel offers one for everyone. For example, Matias's plan to clean the slums, Fraga managing to start a CPI against the rampant corruption in Rio and Nascimento's shootout with the corrupt cops.
Crowning Moment of Funny - Many of the jokes are lost for non-Portuguese speakers, but some, such as the grenade scene, definitely qualify.
The pundit, Fortunato, in the sequel. Then he becomes involved with the corruption and crosses it.
Internet Backdraft - Go to some orkut community and comment that you think Captain Nascimento is a bloodthirsty fascist. If you survive, go to some other and say he is exactly what society needs. Then tell us the results.
This is mostly due to the Brazilians' growing frustation with the ever-present corruption, not only on the Government, but in its police force as well. Nascimento's radical hate of corruption makes him admirable.
Misaimed Fandom: Arguably, Captain Nascimento, who's clearly shown as very deeply flawedcharacter at best. Didn't stop the fans though, there were even media reports of people applauding his actions when seeing the movie at cinemas! (see also Values Dissonance) The scriptwriter, a 12 year veteran of BOPE, mentioned in an interview that he was surprised at Nascimento's popularity.
Memetic Mutation: Holy cow. There's the "Number 01" routine, "PEDE PRA SAIR!" ("SAY UNCLE!"), "O senhor é um fanfarrão!" ("You sir, are a buffon!"), "Você não é caveira, você é muleque!" ("You're not a skull, you're a brat!") and many others. Unsurprisingly, they're all from Captain Nascimento's dialogue.
In the sequel, it's hard to say where the militias cross the line into the unforgivable, since they already start very rotten. Maybe when they kill Matias without warning or when they force a journalist who was documenting them to strip, rape her, kill her and burn her corpse.
Noble Demon: Fabio has some shades of this. While he's still a Dirty Cop, he's never shown doing the horrible atrocities that the corrupt cops and the militia in the second film do. He's still quite the slimeball, but he was a true friend to Matias and Neto. The closest thing to a Moral Event Horizon he has is killing Rocha (Possibly, as it's unknown who really shot him), but no one is sad about it. As a whole, Fabio also seems be a Butt Monkey to the other corrupt cops BECAUSE he's not as cruel and monstrous as they are.