“Ruling Class”? That’s Marxist terminology.
Google is your friend. You will find a Conservative article on that very phrase and what and whom it identifies as 'ruling class'.
So that makes it off limits to anyone else? Try reading Codevilla's American Spectator piece, America's Ruling Class -- And the Perils of Revolution -- a piece that Limbaugh devoted an entire show to, with approval. (Even if you don't care for Rush, you really can't call him a Marxist!)
Ruling class vs. Country class is language from a brilliant American Spectator article and book by Reagan official Angelo Codavilla. Secondly, if you join such stellar intellects as are ohhhhh sooooo Nervous Nelly worried about “class warfare,” please explain why “class warfare” is perfectly OK when waged by the elites against ordinary folks but a danger to civilization when ordinary folks retaliate and stick up for themselves.