Watch FX's 'Sons of Anarchy' season 6 promo

The much-anticipated sixth season of Sons of Anarchy returns in September and as expected, it's not looking pretty.

FX released its first promo for the upcoming season to the tune of Nine Inch Nails' The Mark Has Been Made." A mega-brawl between Jax, Clay, Tara, Gemma, and other characters on the show previews what looks like a stormy ride ahead.

Watch the fight in slow motion, below.