Because when people enter a country undocumented , they live below the radare . g . , don ' t have a fixed address , don ' t work legally , pay taxes , etc . So the worst characters may live off the crime world drugs , traffickingand yes , they need to be deported . <| sep |> That person was actually guilty though . They were trying to solicit sex from a minor from their phone number and address . The guy was making up excuses that didn ' t make any sense like my friend was using my phone . And its not like he was being a vigilante . The creep catcher submitted the evidence to the police , and then the person killed themselves . Just because they were mentally unstable doesn ' t excuse the fact that they were looking for sex with a minor .