Don't hate your country. First he leaked a ton of classified military stuff, not just bad or morally questionable things and while his treatment was shameful, the judge did take that into account during sentencing.

Finally don't hate your country because it is actually great. In most nations we would never have heard of this because it would be the way things were done, second it was the US that thought the rest of the world the ideas behind freedom. Sure it fails from time to time, but that is just because it is compromised of humans, who are awesome but fallible creatures.