My parents weren't usually trying to shut us up, they would sit down and talk to us about stuff more often than not and encourage us to come to them with problems.
For me the title of the thread applies to authority figures in general. We are able to learn way more outside of school then in school but the mentality is you're not supposed to question the teacher and just do the work. Don't question authority is what many people are taught and when kids rebel against that they are punished. They grow up and still maintain that mindset.
I remember being in school and I questioned something the teacher said and other students were telling me to shut up and going "This dude trying to argue with the teacher

." I wish I could remember the subject but that situation bothered me, that way of thinking makes it seem like kids are inherently dumb by default. At least in comparison to the teacher(authority). It frustrated me more than it should have, "Just do your work. Why are you trying to argue with the teacher? Just do what she says."
There are many things the school won't even teach you and points in history are deemed not as important to talk about. For example I didn't learn about black wall-street until after I graduated, as that apparently wasn't seen as important to talk about

.
Kids are taught to 'fall in line' to sit down and shut up and not question authority figures. You shouldn't debate with them, you shouldn't try to question what they do just shut up and do what you are told. I feel that it is overall a very harmful way to go about treating children as it warps their mindset to being a lesser-than and nothing more. Children should be encouraged to ask questions in general. I'm not saying kids know everything but stop trying to shut them up.