Answer: sexual sadists
Explanation: sexual sadism is a disorder where an individual feel sexual excitement or arousal from inflicting pain, humiliation or suffering on their victims or sexual partners. Sexual sadist offenders are usually obsessed with keeping trophies and excessive violence.
These trophies which might include video tapes, audio tapes, pictures or even diaries can serve as evidence against this offenders in the court of law. So these should be included in a search warrant.
Widely used in Europe, but controversial in the united states, Sobell programs or controlled use programs suggest that moderate substance use can be a successful treatment outcome.
They are recorded for people to follow them and passed on for the same reason but also to maintain the country safe