Anti-Armenian sentiment means when some people not like Armenians for some reason. They might say mean things about them or treat them poorly. This kind of behavior is not nice or fair. It's like when you have a favorite toy and someone else doesn't like it, and they say mean things about your toy or even try to take it away from you. It's not fair or kind. It's important to treat everyone with respect and kindness, no matter where they come from or what they look like.