This would be pretty easy to test. Just get a bunch of friends to start exchanging encrypted messages about bombing an embassy or govt office. If these douche-bags can break it, they'd be on you like white on rice.
can anyone think of a lower risk way to test...?
I have an idea, do what these guys did
http://www.dailymail.co.uk/news/article-2407949/Test-reveals-Facebook-Twitter-Google-snoop-emails-Study-net-giants-spurs-new-privacy-concerns.html