Teaching kids to question authority isn't a bad thing. In fact, it's imperative that we do teach our kids to question authority, just not indiscriminately or with a rebellious attitude.
"Just because someone says it, it doesn't make it true." This is something we tell our children at every opportunity.
Whether we're reading a book, surfing the web, reading a magazine, or watching TV, we want our kids to be able to listen or read the words without automatically filing the information under "truth" in their minds. We're not telling them to be skeptics of everything they hear, but we are teaching them that truth isn't determined by what someone says.
I don't want my kids to feel like they have to believe everything they hear. They need to be able to form their own judgments and opinions about things, to be unique, thinking, and reasoning individuals.
Even when we sit in church, listening to the sermon, we remind our children not to take the pastor's word as absolute truth. Yes, our pastor strives to divide God's word correctly, but he's also the first one to tell us that we always need to check what he says with Scripture, the only source of absolute truth.
So many people today are all-too-willing to believe everything they hear, whether it be from a magazine article, a book, a professor, a news anchor, a scientist, or any other "authority" on any subject. It is our hope as parents that as our children get older they will form the habit of filtering everything they hear and read through the lens of absolute truth — discarding what is not worthwhile, and accepting what is. We don't want them to rebel against authority, but we do believe it is our responsibility as parents to teach them how to question it when appropriate.
Questioning authority is a life skill of differentiating truth from opinion.