⑵The Meaning of Three Billboards DesertThe inaction of the protagonist, Sheriff Willoughby. The three billboards repre sent the inaction of the protagonist, Chief Willoughby, and the police's anger and dissatisfaction with the lack of progress in her daughter's murder case. Themes of social justice, personal grief, anger, and revenge are explored throughout the film through the display of these billboards. Based on dark comedy and drama, the film delves into the characters' emotions and moral choices.