Musa Chaudhry’s review published on Letterboxd:
What's interesting about BvS is that while with MoS Snyder wanted to tell an immigrant story from the perspective of the immigrant by exploring Kal-El's Kryptonian and Earth-ian heritage, BvS is an exploration of the immigrant story from the perspective of the world surrounding the immigrant. And what was astonishing was the parallels that Snyder drew between Batman and Lex Luthor, and how they're essentially two sides to the same coin, both human beings who's very existence is brought into question because of the Superman, where Lex's knowledge is paradoxical because of his lack of power against this alien creature, and the entire movie charts his fall into madness at trying to prove Supermam's faliability in order to prove the relevance of humanity. In his own head, it's a noble cause.
Now with Batman, his legacy is brought into question with the arrival of Superman, and the question is asked, what did his sacrifice really amount to? Criminals are like weeds he tells Alfred, they'll always grow back. Twenty years in Gotham didn't amount to shit, and now we have Superman pop on the scene, who can fly across the sky in the blink of an eye and has the power of the sun behind his eyes? Batman needs to take down Superman to prove to himself his own self worth. This is his only mission, and with a nudge from Lex, Bats goes over the edge and becomes consumed by this vendetta against a being with who he's projecting his own insecuritie onto.
And that montage we get where Superman is doing Superman things as talking heads on news programs debate whether he has a right to exist, and we get that idea brought up, about how we as human beings project our own ideals or fears onto who we believe Superman to be, when at the end of the day, maybe he's just a guy trying to do the right thing. Essentially what Snyder does is show us a world that slowly turns against Superman's ideals, trying to demonstrate that maybe Superman doesn't have a place in this world anymore. Maybe his ideals, sense of morality and character in general is too old fashioned to be accepted within the cynicism that exudes from society's pores. Yet, as the world turned its back on Superman, Superman never did that to us, and in the end, Superman gave his life to save ours, and that will maybe give humanity a push in the right direction, giving us a selfless hero who's ideals we have to strive towards rather than back away from