I don't think this dude should have been doxxed for what he did. We're free to talk shit to one another; that's the beauty of free expression.
I also back up this woman if she had hurled racial insults back at the dude, but she didn't.
I've actually lost Mexican friends over people like this. I believe in a "tooth for a tooth, eye for an eye" policy (Exodus 21:23–25). If someone is racist to me, I'm racist to them.
In the car racing scene in the late '90s, a lot of Latinos were more into American muscle cars than JDM. When they lost a race, racist insults would sometimes be hurled because they lost a few hundred or a thousand dollars.
Now, this is where things go wrong. I'd hurl racist insults back. These insults end up pissing off the Mexicans on our side, and they forget that insults were thrown my way first and argue I should have just taken it instead of insulting back.