I don’t understand your overall point. Bringing up anti-vax people the way you did suggests to me that perhaps you have become lost. Being an anti-vax person is objectively foolish and dangerous. We have decades of incontrovertible evidence that vaccines are good. Those who don’t vaccinate are stupid or being duped and led as if they are zombies (to use your parlance).
If this group of people serves as a great example for your point then your position intellectually unsound.
I picked the hard one to challenge reflection on because it was useful. An equivalent blood libel zombie variation is the belief that a global elite is kidnapping children for abuse rings (pizzagate, etc.), but I didn't use that one because it was too close as a proxy for the anti-semitic original. The point is this is an established pattern, where unless you reflect on how you know what you think you know, and why you believe something, you're going to be the subject of a belief, and not a holder of it with agency.
Just to add, when you hear a lie, you shift into a defensive mode where you do not act while you wait for the dissonance to resolve. A big part of this method is to produce lies that will in effect mentally paralyze those who percieve them, and by merely doing nothing as a result, they will not act or coordinate to resist the rest of the liars actions.
A minority of people needs to understand this.
People have ideas less so than it is ideas that have people, and intersectionality as an idea has collected a lot of people.
If this group of people serves as a great example for your point then your position intellectually unsound.