show someone the door

verb2

1. •
   To escort someone to the exit of the premises; to expel someone from a room, gathering, etc.

   • "[N]o man shall laugh at me now that I'm down. Show him the door, Dig." — 1913
2. •
   To dismiss, fire, or reject; to exclude someone who was formerly included.

   • The medical profession, by its drift toward specialization, is handing the family doctor his hat and showing him the door. — 1939