Okay kiddo, a manifesto is like a big letter or paper that someone writes to tell everyone what they believe in and what they want to do. The manifesto of race is a manifesto that talks about how people should be treated differently based on what race they are.
You see, when we are born, we all look different. Some people have darker skin, some have lighter skin, some have curly hair, some have straight hair, and so on. We call those differences "race".
Sometimes, some people think that just because someone looks different than them, they are not as good as them. They might even treat them badly, and that is not okay!
The manifesto of race talks about how everyone should be treated equally, no matter what they look like. It says that everyone deserves the same rights and opportunities, no matter their race.
It's important to remember that we are all different, but that doesn't make anyone better than anyone else. We should all be treated with respect and kindness, no matter what we look like!