Yes, you can be well-intentioned and still do harm. That, at least, is what television personality and media mogul Oprah Winfrey learned when she apparently and good-naturedly dismissed Diana Nyad's claim to being an atheist.
I charge anyone who is challenged by this to think a little deeper, to broaden their experience working with and knowing the non-religious, to try to understand that the religious and the non-religious have a lot to learn from each other.
While I try to keep an understanding voice, there are beliefs, ideas and individuals that can push my buttons -- and I have plenty of buttons. The boundary between being open to others and being justly offended by the bad beliefs they hold is not always clearly demarcated.
An atheist, Chris Stedman may seem to be an unlikely advocate for the rights of Muslims, but he has proven that justice and tolerance are not confined to any particular religious, or non-religious, group.