Tim Cook
Tim Cook said that the government was asking for "the software equivalent of cancer."
Support is especially strong among young people.
The FBI chief had said his agency wasn't looking to set "any precedent" with its Apple demand.
Saving Private Writin'.
WHAT'S HAPPENING
"I hope folks will take a deep breath and stop saying the world is ending."
The call comes one week after Apple refused to help the FBI unlock an iPhone tied to a terror case.
Google, Twitter and WhatsApp are among those opposing helping the FBI hack into a terrorist's phone.
Look out, Apple.
It's more complicated than it seems.
The government wants to unlock an iPhone connected to the San Bernardino terror attack.