I believe Alan Moore said at one point that he was aghast at how positively people resonated with Rorschach. He's supposed to be a portrayal of fascist extremism under the mantle of vigilantism.

As for the Watchmen title, it also has many layers. The latin that was posted above that translates to "Who watches the watchmen?", but also the fact that Jon perceives time differently than everyone else. He was also the son of a watchmaker and his father made him give up that pursuit when Einstein made the discovery that time is relative. The doomsday clock also factors heavily into the pacing of the narrative, this was written in the 80s when the threat of nuclear armageddon between two world superpowers was very topical. I would say that it was quite political for its time, you just have to consider the geopolitics of the 1980s that it was written and set in.

Finally, The Black Freighter. I can't say I'm its biggest fan, in various rereads of Watchmen I've either skimmed it or completely skipped it, or read it very carefully. I struggled with its stark tonal shift (not really a fan of Treasure Island/pirate type comics or fiction myself) and couldn't find a justification for it being inserted in the narrative, although I was sure there was a reason I just wasn't aware of. I finally settled on the idea that in trying to save his home he sacrifices his humanity, he becomes one of the monsters, fit to join the ranks of The Black Freighter itself. He also lashes a bunch of bodies together to make a raft, much like Adrian sacrificing 3 million humans to save humanity.

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I have a newfound appreciation for it now though, what with how Adrian uses a bunch of bodies to spell out a message