That's pretty nuts. I've dealt with schizophrenics in a previous job I had at a psychiatric treatment facility. Not pleasant people to deal with. This could be bad, because most people could just treat him as a typical homeless guy (many of which are schizophrenics, which is a large part of why they are homeless), and ignore him, when he is actually a "criminally insane killer" just waiting for the voices to tell him to kill his next victim.