There is a big argument in the USA between the technology company Apple and the FBI. The argument is over the iPhone of a killer. In December 2015, 14 people were killed and 22 were seriously injured in a terrorist attack in San Bernardino, California. The FBI has the iPhone of one of the terrorists Syed Rizwan Farook. Investigators want Apple to unlock the phone so they can get to information about Farook. They think the information can help them to catch more terrorists. Apple has told the FBI that they will not open the iPhone. Apple's website said that would threaten the security of its customers. Apple also said it would be dangerous because other organisations would want phones opened.
The Department of Justice (DOJ) is also very angry that Apple will not open the iPhone. It said Apple, "deliberately raised technological barriers" to stop a lawful request from the FBI to help in the "terrorist mass murder of 14 Americans". The DOJ added that: "Apple alone can remove those barriers so that the FBI can search the phone." Apple bosses said the DOJ was giving Apple a bad name. They said the DOJ wanted the public to think that Apple was an evil company for not opening the iPhone. It said: "It seems like disagreeing with the Department of Justice means you must be evil and anti-American." The DOJ said it wants just one iPhone unlocked and that would not invade anyone's privacy.