Get it because this is a really hard boss fight, representative of the hard uphill struggle against reactionaries that leftist movements have and will face.
Smough just smashing/absorbing Ornstein makes this analogy perfect.
And if smough (who I assume is fascism in this analogy) dies first Ornstein gently caresses him and absorbs his power, reminiscent of Lib’s ability to rehabilitate literally the worst people as soon as they’re dead.
It's fitting that they live in a gilded city, and the only person that doesn't try to punish you and end your existence there is the blacksmith (assumedly unionized and radical left) toiling away outside their chamber.
Trying to scale the walls of said city as their classist protectors threw massive javelins at you is the most American thing ever.