Hello everyone. I need some advice to see if IABU with regards to my son (4 yes) being called a bully. We are currently visiting family abroad and his been seeing his younger cousin (2 1/2) a lot lately. They get along for the most part, but recently they have been squabbling and pushing each other around. When my son is playing with Lego by himself, his younger cousin comes along and knocks it down multiple times and laughs. The young cousin is constantly being told to stop and it's not nice but he doesn't listen. He has even thrown a Lego at my son's head and left a bump (he throws a lot of things). The young cousin also keeps getting in my son's face. My son tells him to move but he doesn't so my son lands up pushing him out of the way. Because of this, every time he comes near my son, my son screams and pushes him away. My son is told to stop screaming because of this. The young cousin also stands next to my son when he is eating and my son doesn't like it and screams and pushes him away. I understand it isn't nice to push and my son has been told off for it, but, is it right for his grandma to call him a bully when my son is being antagonised in the first place which no one sees. All they see if my son pushing his younger cousin. Am I blowing all this out of proportion for my son being called a bully?
Thank you for taking the time and your responses.