"All human beings are born free and equal in dignity and rights. They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood."

Why didn't some people believe this? Why don't people still believe this to this day?

>>17810585 (OP)
Have you heard of India

>>17810585 (OP)
There are people, as other anon said who follow a strict caste system like in India.
Other people are racialists and believe that there are literally multiple species of humans alive on earth today.
And maybe there are other reasons too.