Would Mill Approve of America's intellectual culture? of ND's?

Would Mill Approve of America's intellectual culture? of ND's?

In America today, we like to think we have freedom of thought and speech. But Mill is speaking in terms of not only what is allowed by law but also by society. With all of today's partisanship, on the left and on the right, from theists and atheists alike, can we say that we as a society are open to dialectic with other modes of thought? sorry for the short post- I hope this extratextual question will bring us into the text.