Okay, so there are some people who say some not nice things about a man named Muhammad. Muhammad is a really important person to a lot of people, especially people who follow Islam. Islam is a religion, kind of like how Christianity is a religion.
Now, some people might say things that are hurtful or not true about Muhammad. They might do this because they don't understand or agree with what he taught or did. That's not very nice, is it? It's important to be respectful and kind to others, even if we have different beliefs.
It's also important to remember that not everyone has to believe the same things as us. We can still be friends with people who have different beliefs and respect their opinions. Everyone deserves to be treated with kindness and respect, whether we agree with them or not.