You want a time when humans were less racist ? Well.. I don't know.. Perhaps few years ago when far-right racist parties in Europe made up less than 30% in votes.
> If anyone feels negative, I recommend seeing a psychologist. There is no reason for anyone not to feel exceptionally optimistic about the future these days!
This is your point and I don't agree. Saying things are the best they've been is wrong. Things are the best for you. Not for "the vast majority of us". It is the best for the small minority. And no. It's not improving every day. In my first comment, I posted links with number of slaves all around the world and migrants dying, growing year after year.
Please, understand that while you feel optimistic, the majority of us, don't. Saying that we should see a psychologist is just rude. It seems that you are unable to understand other people feelings, thus, I would recommend you to see a psychologist.