slavery still existed in the USA

That is, when our grand-grand parents were alive, people who once were slave still existed

I'm reading "The Invention of Wings" and I'm appalled at all of this

Jim Crowe was still around less than 100 years ago

The Holocaust was only 70 years ago

Being gay is still a capital crime in some Islamic countries today

Poor minorities

also, less than 50 years ago, natives were still forced into residential schools in Canada

this.

hopefully it won't be for the worst

50 years ago, arab countries were secular and pro-women, look at some of them now

Look at Russia now compared to the URSS in term of civil rights

Let's hope we continue moving forward and don't hit another dark age period any time soon.

Sis slavery only ended in Saudi Arabia in the 70s.