The potency of some of the techniques in play is MUCH higher than most people think. Several will.work on people who work in the field.
It isn't mind control, but they can cause a predictable, repeatable change in feelings towards a product or subject in a predictable percentage of a target demographic.
From my research on the subject it appears that about 25% of people are completely defenseless to common techniques. Watch for yourself the next time you see a piece about people who believe nonsensical things promulgated by PR and marketing. The numbers are always around 25%, across ideologies.
And they have done studies that establish that even people who should know better believe they are immune to techniques they patently are not.
The PR trade even has a name for some techniques: "black PR". Methods considered unethical to use. It is even illegal to use them in some countries, and practitioners are licensed.