The sentiment exists in every society because society and civilization is always hierarchical.
That is the root of a simple division that a coordinated state actor will exacerbate, amplify, meme-ify, and repeatedly upvote with bot armies.
Taking as fact that social media platforms program the brain of their users via dopamine rushes obtained through the upvotes, likes, and user engagement. Thus and therefore we can conclude that this is the easiest attack vector in the history of state versus state psychological warfare.
Adversaries use benign divisions as a tool to cause discord. This has always been the case, but social media is a tool that has been weaponized to tremendous effect and now you can see it being leveraged as a weapon by simply opening Reddit and seeing what divisive was botted to the top.
Maybe you refuse to believe this is happening and you assume this is all a paranoid fiction. That is fine. How then do you explain the legions of PHDs and psych researchers and language experts working at Chinese and Russian information warrior farms and leveraging machine learning empowered bot identity generators? Do you just assume Russia and China are pissing money away?