I waited at least 30 minutes into this tedious affair, wanting something, anything, to happen. When it finally did, it wasn't overly inspiring. Thereafter, it was like a car with a stuck accelerator, start, stop, repeat until the last fourth of this film, when something exciting "finally" does happen. By then, I'll wager many viewers will have simply given up. Guess I'm a naive optimist..... 
Why, why, why can't we have decent scripts, Netflix? Could it be you are too busy woke messaging? One of the characters talks about lynching the main character and the main character, in turn, comments on how the black police officer has an inferior police car, compared to her white counterparts. 
In reality, I do believe there's a genuine problem with policing and not just in the US either. Statistically more white Americans are killed by police every year than black, so its fair to say, its a problem for "everyone".
That said, like a lot of people, I look to entertainment to escape the world's misery and divisive politics, not have it thrust in my face, over and over again. 
In summary, on first inspection, Rebel Ridge, has all the hallmarks of an updated Rambo style action flick backed by a strong cast. I was genuinely excited, until I saw the final, dull, lecturing product.