Did depends on the wording like me I us we or he, him, his, himself, she, her, hers, herself, it, its, itself, they, them, their, theirs, and themselves. If you see I in the book you know its a first person but if uses words like they then its third person
Well this is more your opinion so I can't realy answer for you but I would agree strongly crimes comte by children under 18 are getting worse and more frequent.