who says "it's morbid, watching a poor devil on trial for his life. Look at all those folks, it's like a roman carnival... just because it's public, i don't have to do, do i?" to kill a mockingbird

How can we make the world a better place, specifically towards discriminated people (lgbtq+ community, people of color, people with disabilities etc.) how can we make them change their view on people they call "different"? how can we get people to love one another despite how they look or who they love or where they are from? 2-3 paragraphs ! (ᵔᴥᵔ)