If the law enforcement is trying to find a murderer, or they're trying to catch a drug lord or trying to prevent a school shooting, and they have leads and they have suspects, then it's perfectly fine for them to tap the suspect's phone, and to intercept his Internet communications.
Ako policija pokušava pronaći ubojicu, ili pokušava uhvatiti narkobossa, ili pokušava spriječiti pucnjavu u školi, i ima informacije i osumnjičenike, onda je sasvim uredu da prisluškuju osumnjičenikov telefon i da presreću njegovu komunikaciju na internetu.