Vivian: Philip, when I met you, you were into James Brown.
Will: He liked James Brown?
Vivian: Even wore his hair like him.
Will: He had hair?
Hilary: He's punishing her.
Philip: No, Hilary. I just want her to spend some time with her family.
Hilary: Same thing.
Answer: Because Carlton is naive, trusting, and optimistic. He lived a pretty sheltered life in Bel-Air and just doesn't think police officers would do anything unjust. At this point in his life, he just hasn't gone through the things Will has to make him think otherwise.
Bishop73