@snowden could have chosen to not told our adversaries about any spying activity upon them. Instead, he stole classified info that was far beyond the scope of domestic surveillance, in a pre-meditated way, then shared this with our adversaries.
"domestic enemies in Maryland" is entirely your opinion. Are you an American citizen? What exactly is your justification (beyond Hollywood propaganda, news articles, etc) for such a claim? Have you reviewed in detail what @snowden (and his co-conspirators) have leaked? How much was actually related to domestic surveillance? How much was classified military intel?