edit: Yo guys I'm not saying we need to give it all back. History is stained in blood.
America achieved massive wealth in spite of a violent history, not because of it.
Life back then was short, nasty and brutish. If the population continued to grow with corresponding progress, we'd be fighting even more over the limited resources available.
On the larger scale of history, yes. I don't think working class people are necessarily doing better than a few decades ago, when they had stronger unions and more power, and before wages stopped rising (which seems likely related to the loss of power).
But an important note, and I don't mean to pick on the parent. In these discussions, the working class is almost always described as "they" and not "we". What do we really know? Input from people with real experience is necessary.
You just described the history of Humanity.