“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 [ in the U.S] 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.” (Noam Chomsky)

The above quote is from his comprehensive interview “Business Elites Are Waging a Brutal Class War in America” which is an excerpt from his book OCCUPY: Class War, Rebellion and Solidarity (2013).