Across many platforms, I've gotten the most vitriol and heated discussion about pit bulls. It's a topic that has gotten me nastier responses than politics or other hot button issues.
It's really frustrating. I have many years of experience in rescue, shelters, veterinary medicine, and more. I've worked with more of these dogs over the years than I can count. I've also worked alongside people with much more experience than me, and I have yet to meet a single person in animal welfare that views pit bull type dogs as broadly dangerous or difficult to work with. I'm sure those people are out there, but it's not a common view.
You can discuss the wide variety of factors that lead to this sweeping characterization of bullies, ask people to talk with animal professionals in their lives about their experiences, and encourage them to volunteer to get actual experience with these dogs. It doesn't matter or seem to nudge them into considering anything other than these dogs being ticking time bombs.
I'm not saying everyone should own pitties. Spreading misinformation and continuing to demonize pit bull types can influence other people who could be a perfect home for these dogs to never consider them, though. So many dogs with wonderful temperaments are euthanized and never even given a chance just because of how they look. It's really disheartening.