When it comes to changing someone's mind, I believe it helps to first question whether there's even a need to do so. If there is, then asking questions is vital. You can't just hit someone with Facts & Logic™ and expect that it will immediately undo something they may have had drilled into them since childhood, or something that requires recognition that would challenge other dearly held beliefs (e.g. "if my dad did a bad thing, then is he not the great, infallible man I thought he was? If he's a bad person and people tell me I look and act just like him, does that mean I'm a bad person, too?"). Finding out why someone believes what they believe, and taking time to understand it yourself and validate their experience is instrumental in opening up people's hearts and minds. Or, at least, that's been my experience and is therefore true to me. 😉