to turn one’s back on; to turn away from
Il ne fallait pas tourner le dos au reste du monde !
We shouldn't have turned our backs on the rest of the world!
— Black Panther (2018)
En fait, il tentait de me tourner le dos.
In fact, he was trying to turn his back on me.
— Assurance sur la mort (1944)
Je vais demander à nos invités de tourner le dos.
I'm going to ask our guests to turn their backs.
— Carandiru (2003)