... the police will now be allowed to examine the material to investigate whether a crime of 'communication of material to an enemy' has been committed
Miranda is clearly guilty, then, as he certainly communicated embarrassing information to dirty red commie journalists.
Sadly, many Western governments are unable to carry out some actions they want to if the general public knows about them, simply because most people consider them immoral and unacceptable. They are, then, presented with a dilemma. They can stop doing things their electorate would find objectionable, they can try to eliminate the ability of the electorate to influence government, or they can lie about what they are doing and try to keep it secret. The third is impossible if people like Snowden are allowed to tell people what their government is doing on their behalf.