I'm skeptical about this particular report - and I've been criticized for that skepticism.
My reasons:
1. The local Minute Men are really stressing that this film crew was not working on their behalf.
2. I've know a lot of journalists, including photo-journalists. It's hard to imagine a 4 man film crew getting shot at and chased at length and no one getting a single photo, film clip or audio recording.
3. They claim they had time to identify the perusers as Mexican army but didn;t describe any insignias or symbols.
Other reposrts I've read of shots being fired at (or over the heads of) Minute men just had a more real feel than this account.