Hmm... although an American, I'm not a very political person (especially in an American sense, I don't really like trying to divide things up in the whole liberal vs. conservative thing). But I do have a few thoughts about the political thoughts above (I didn't quote anyone because I'm not singling anyone out or really trying to argue with anyone).
Diversity - I actually thought that this was very well done. Characters seemed pretty randomly chosen, and I personally think that was the best way to handle this. Plenty of the generals and random foot soldiers in the Resistance were white guys, and as noted above many of them were also ethnic minorities and aliens. The First Order, although having mostly white guys as their leaders, also actually had pretty good ethnic diversity from what we saw of the non-speaking roles (the random lieutenants walking around in the background). I also liked the fact that older women were portrayed in leadership roles, and that there was very minimal makeup on any of the actors.
Empowerment of women - action movies, in my mind, usually do a bad job at this. In a lot of older movies, women only acted as damsels-in-distress, and the reaction has been to have newer movies have women leads who are often pseudo-men, who think with their fists rather than their heads, and have irrational rage and other overly macho qualities. I think that portraying women as having to act like men to survive in an action movie is a huge trap - it ends up disempowering women, because they are at a huge disadvantage pretending to be something they're not. And that's something that I think Star Wars always did better - Princess Leia was the original empowered yet feminine lead, and she fit the damsel-in-distress archetype while still fighting the Empire (Star Wars Insider has written some excellent articles on this subject). And I think that Rey follows this example very well. Rey is definitely empowered in the way people expect of modern action movies - fighting the royal guards, lifting the rocks, firing the guns on the Falcon. But she's also a character who's not afraid to be feminine - she cried at least five or six times in the movie, did what she did to protect her friends (not to seek vengeance), and was intelligent in her conversations with Kylo, trying to reason with him rather than intimidate him. Basically, Rey is the same character as Luke - this powerful Jedi who has a perfect balance of masculine and feminine qualities. It makes for a good movie, because all the decisions are harder for such characters (Luke only barely chose to fight Palpatine, only barely chose not to kill Vader, only ignited his Lightsaber twice in RotJ. Rey only barely decided not to follow Kylo, only barely decided to leave the island, etc.). But it also makes for great characters, because it shows that both men and women should be allowed to use both sides of their personalities. And that's why Rey is now tied with Luke as my favorite Star Wars character. As for empowerment of other women, as I said earlier, I really liked that older women were allowed to do stuff (Holdo, Leia, Leia's aide), and those women were all allowed to be relatively feminine.

