Well, there’s always a class war going on. The United States, to an unusual extent, is a business-run society, more so than others. The business classes are very class-conscious—they’re constantly fighting a bitter class war to improve their power and diminish opposition. Occasionally this is recognized.
We don’t use the term “working class” here because it’s a taboo term. You’re supposed to say “middle class,” because it helps diminish the understanding that there’s a class war going on.