"A Girl LIke Me"

About a while back, I watched a movie on Lifetime that was called "A Girl Like Me: The Gwen Araujo Story" which was about a transgender woman.  Gwen, who grew up as Eddie until around the age of sixteen,  knew she was different from a very young age.  Her mom and sisters would look at her oddly for wanting to wear makeup and dresses, but she didn't understand why.  When she became a teenager, she decided that she wanted to transition from male to female.  No one suspected that she was actually born a male, and she was not bullied.  At the age of 17, she was brutally murdered by four guys because they had heard that she had male genitalia.  They beat her up for 5 hours before disposing of her body.  They didn't understand her because she was different, so they decided to end her.
"We fear what we don't know."

This movie was based on a true story.

How is it possible that people can be so evil?  I will never understand why people feel the need to put someone else down and cause them harm just because they are different.  

I have grown up around homosexuals my whole life, and to be honest, I see absolutely no significant difference between a homosexual and a heterosexual.  The only difference is that they like different genders.  That's all.  Yet people want to shame and shun them just because they like different genders?  Just because they like different genders.

Although cases might not be as extreme as the unfortunate one of Gwen, things like this still happen.

 What do you guys think is necessary in order for there to be change in this world as far as gender roles and the lgbt community ?