I don't think I am immune. I used to think that ads on the radio didn't affect me, since I would not be buying golf clubs or mattresses or anything else the sponsors were selling anyway. Then, I realized that every ad ran "you are not happy, but you could be if you bought X." The first part was steadily eroding my happiness.
Just once, when I had been meditating a lot and had not seen TV for years, I went to visit my mother, who kept hers on even when she was busy in the kitchen. So, I watched some, and was laughing my head off for about twenty minutes, at how blatant the manipulation was. Then, the clarity faded, and the propaganda has presumably been working ever since. I don't watch much TV, but we can pick up bias from anywhere. Just the selection of news is all that is needed to start or stop a war.