https://www.scribd.com/doc/246397486/The-ADAAA-Congress-Brea...
Major depression, or the perception that someone is depressed, is now considered a disability that the ADA applies to.
If an employer takes a hostile action (denial of promotion, firing, etc.) against someone based on their disability, the victim can sue the employer.
Proving that they fired you because of the article will be an issue, but a skilled disability attorney can probably do that. Presuming that you were otherwise a good employee, it probably won't be too hard to prove that the article was the reason. Talk to a disability attorney, or just contact the EEOC.