They should be treated as everyone else should be treated. Why? Because everyone is human and should be treated as such. Treated with respect. Treated with kindness. Treated with love.
Sure. They have differences. We all have differences. But that shouldn't matter. If someone doesn't agree with their decision, that's none of their business.
It all just comes back to the golden rule that we were all taught when we were kids.
"Treat others the way you want to be treated."