'Captain America 2' Reviewed: Superhero Meets Postmodernism

I'll have to see 'Thor 2' to stay in the sequence of Marvel's Avengers series, but I'm really intrigued about the reviews of the recent Captain America: The Winter Soldier. Some reviews have mentioned it to be a discussion-starter on ethics and justice. Two reviews below:

Patheos.

PluggedIn.

What are your thoughts? (Remember, I haven't seen the movie yet, so please keep the discussion spoiler-free).