The fact that the US doesn't recognize Snowden as a whistleblower doesn't prove persecution or anything at all. He broke the law. He and others may not like it or agree and they don't have to but its still clear he broke the law. What has Snowden told us that we didn't alreay know since 2006? He gave us classified documents and the names and operations of classified programs. Programs we already knew about but just didn't know the name of or how they worked. Hell, even with what he did give us we still don't actually know how they work. But we sure as hell always knew our calls and Internet activity were being monitored.
I'm not a fan of what the NSA is doing but I don't think Snowden is even remotely close to a hero either. Did you know you can take that position? That there's a difference between ones position on NSA spying and whether Snowden is a whistleblower? I'm of the opinion that Snowden and the NSA are criminals.