If nobody believed in superstition it would be unable to hurt anyone
Speaking the Truth about Miracles
Do not take religions of miracle such as Mormonism, Christianity, Islam and Judaism seriously. Truth matters more than kindness in the sense that its unkind to deprive people of the chance to grow and face the truth. But that does not mean we promote the truth in an unkind way. We speak the truth kindly. If somebody does not want to hear the truth from us, we respect that. Respecting that means that we don't push. It does not mean we have to approve. However, we may still ask them questions so that they can see through their own errors.
Religious people are defensive which is why they encourage the myth that giving them the chance to see their faith is wrong or even telling them its wrong is rude. We need to ask them why their dislike of us playing devil's advocate should come before our dislike of keeping what we see as the truth to ourselves.
Believers in the supernatural are being objectively irrational if not subjectively. In other words, they are irrational even if they intend not to be. If others truly respect us unbelievers, they will listen to what we have to say for error breeds error and always causes trouble in time. Anything that harms the truth is not good. We should be strong enough to go where the evidence leads us for if something is true then the evidence need not be feared and may support it.
You cannot protect people from themselves but do exercise and claim your right of freedom of speech to warn them. For example, if a fanatical Catholic is going to Medjugorje do not be afraid to tell them they should not look into the sun. Tell them that Jesus said people must not look for signs but do his will. People need to be informed so that they can make their own choices.
True respect for others treats them as searchers for truth. Guide them to realise the truth for themselves by asking questions.