If you ask a question, and you can see the gears turning, wrestling with the programming, but alas the expected predictable thing is stated, it’s called brain washed.
Call it what you want to. By the way, both sides fall prey to the same things. There are susceptible people on both sides of this equation. Its definitely not limited to the left. Iffin' you pay close attention, you will notice that great care is taken for these sides to stay at polar opposites on the issues because if they align then the matrix has a segfault lol.
The majority of people sit in the middle and are capable of some level of self-deductive-reasoning and trust their personal observations. Sadly, the middle has no (or had no) voice. This seems to be shifting and the fringes continue to drift further apart while trying to drag people away with them.