It’s a great look at the rise of marketing, individualism and hedonism in the 20th century.
Democracy In America is another great source:
It’s an extremely prescient, outsider’s look at the tyranny of the masses.
I would also suggest studying the context of the 20th century, especially the lead up with the industrial revolution and both world wars. It’s often lost on people that Western life as defined by American sitcoms was an anomaly powered in large part by the rest of the first world being nearly obliterated. This leads ultimately into global recovery and globalism which I see as a normalization of life after WWI and WWII.
Post-modernism is good to learn about as well. I feel like a lot of people mistake modernism and post-modernism. Post-modernism can actually include a lot of things modernism rejects, such as traditional family structures. It just does it piecemeal framed in a totally different (non-religious) context.