He may have turned his back on Tom Brady, but Antonio Brown is sticking by Kanye West's side ... channeling his buddy's controversial campaign and saying, "All Lives Matter."
Ye is facing a ton of criticism over the "White Lives Matter" shirt he wore during his YZY Fashion Show on Monday ... but despite the negative reception, he's dug his heels in even more throughout the week.
AB -- who recently trolled TB12 over his marriage issues with Gisele Bündchen -- isn't breaking ties with the artist .