bobblehead

noun

1. A collectible doll with a bobbing head.
2. (derogatory, figuratively)A thoughtless person.

   “Muzzling Kelly also elevates a semi-professional obscurantist to the status of free speech martyr, and that invites a cacophonous pile-on from the rightwing bobble heads who screech about the left’s obsession with identity politics while shovelling identity politics at their audiences.”

   “Will Trump and his G.O.P. bobbleheads ever wake up to that? Maybe — when it’s too late.”

3. (derogatory, ethnic, offensive, slang, slur, uncommon)An Indian.