Well I've found out some pretty devastating news...
I found out from my dad who decided to reveal to me my dad and uncle had been having various fallouts with the last one having been last month where these fallouts resulted in my uncle strangling him by the neck. This explains why my dad hasn't been wanting to go to my grandpa's for a while because this happened at my grandpa's and my grandpa didn't even step in to stop it.
And I found out my uncle had also hit my cousins (His children) and my aunt (His sister).
I really don't know how to feel about this. From what my dad can tell me he has a short temper. That's all I know.