Lego faces are getting angrier, study finds | Lego | The Guardian
LEGO Forrest Police Officer with Angry Face Minifigure | Brick Owl - LEGO Marketplace
Will angry Lego heads make kids mad? - The San Diego Union-Tribune
BrickLink - Part 3626bpb0693 : LEGO Minifigure, Head Red Eyes with Black Bushy Eyebrows and Open Angry Mouth Pattern - Blocked Open Stud [Minifigure, Head] - BrickLink Reference Catalog
Angry Lego faces affect children | Stuff.co.nz
Lego Minifigures' faces are becoming less cheerful and more grumpy, fearful and disdainful, finds study | Daily Mail Online
Why the angry face, Lego man?
LEGO Faces Angrier Looking Than They Used To Be, New Study Shows (VIDEO) | HuffPost Impact