If you are a born-again Christian, shouldn't you be concerned about this?

Why do so many Christians turn the other way, when questioned about the dangerous influence Oprah has on people in America? I mean, most people know she's a new-ager with ties to a certain politician (who shall remain nameless), whose opinions are very liberal and anti-Christian. She's very charismatic, and millions of women across the world take everything she says as the gospel truth. It's like she has some sort of mental control over people. One afternoon, I saw her teaching her audience Yoga techniques, while most of them blindly followed along like lemmings scurrying off a cliff. But if you ask a lot of women in America (even Christians), they will say: "You shouldn't judge other people like that; she's a respectable, self-made woman". Is everyone blind or something?