Defense, intelligence, policing, all these things exist in order to uphold the constitution, protect the "American ideals", etc. Many of his statements pretty directly show that he doesn't care about the collateral damage to innocent people's privacy or any founding principles, he just wants his mission to be unhindered. It's the same mentality behind police forces wanting to make their job less dangerous and more straightforward, by escalating use of force and trampling rights.
With this hypocrisy, as has come many times before (congress shocked and demanding privacy when the CIA spies on them, for instance)... I can only shake my head. Come on.
Encryption is our webcam tape.
You need encryption for the same reason you need locks. Locks are not the only trick to provide you security but they are pretty much a very necessary tool. Without solid encryption you can't have a lot of the good things on the internet: online banking, online shopping, filling taxes online,...
> it is still pretty easy to create a virus or something that access the data at the moment it is used
It is not so much anymore. Viruses are getting quite harder to make, even for Microsoft Windows. And, even if you were right, you still need encryption for people that are smart enough to avoid viruses.