Why did Bud find it hard to tell the 'good guys from the bad guys''

It took Bud alot to find out who was good and bad. One thing that happened with that was Todd. While I was reading through the book at the beggining I was thinking if Todd was actualy good, but that was just a guess. The problem was that Todd was actualy a BIG MOMMAS BOY. His mom said thought that everything he said was true, well that was what she thought. The thing that happened to Bud was that Todd was blaming everything on Bud! So that was with Todd. Bud might have also bee mistaken with the good and he bad with Mr and Mrs. Amos. i was also thinking if they were good or bad before i read the chapter. It was the same thing as Todd, well exept the blame part. So i come to my conclusion. It is that it might have been pretty hard for Bud to tell the good from the bad