Buckra is a word that has been used to describe white people in the past. It's not a nice word to use because it can be hurtful for people.
Think of it this way - imagine if someone called you a name that made you feel bad, like "stinky" or "ugly". You wouldn't like it, right? Well, calling someone "buckra" is like that - it's not very kind and can make people feel bad.
It's important to remember that we should always treat people with kindness and respect, no matter what they look like or where they come from. We should never use words that might hurt someone's feelings or make them feel small. So, let's always try to be kind and respectful to one another!