Michael Bennett stood for the national anthem in his Dallas Cowboys debut Monday night ... this despite his long history of protesting during the pregame song.
Bennett -- a strong Colin Kaepernick supporter who hasn't stood for the anthem since 2016 -- was spotted on the Cowboys sideline next to teammates with a towel around his shoulders just before kickoff.
When he was with the Seahawks, the star pass rusher sat on the bench while the anthem played ... and during his time with the Patriots this year, he just stayed in the locker room.