Antisemitism is when people don't like Jewish people just because they are Jewish. It's a mean and hurtful thing to do. In Germany, there have been times in the past where many people didn't like Jewish people and did some very bad things.
But now it's a different time, it's called the 21st century. Even though things happened in the past, sometimes people still don't like Jewish people. They say mean things or even hurt them just because they are Jewish. This is still a big problem in Germany and it makes a lot of people upset and worried.
It's important to remember that everyone is different, and that's okay. We should treat everyone with kindness and respect, no matter who they are or where they come from. It's important to speak up when we see someone being mean to anyone, including Jewish people. Because everyone deserves to be treated with kindness and respect.