Who was Tim Johnson and why was everyone afraid of him?

Tim Johnson is a character from Harper Lee's novel "To Kill a Mockingbird." He is a rabid dog that represents the dangers of racism and the loss of innocence in the story. The fear surrounding Tim Johnson stems from his unpredictable and dangerous behavior, which symbolizes the pervasive threat of racism in the community of Maycomb. His eventual shooting by Atticus Finch serves as a pivotal moment in the narrative, highlighting the need to confront and overcome societal fears.