To add to what Naz said, maybe frustrations come out from normal life when you've had a few. Easily taken out on people nearest and dearest to you, rather than the people that frustrate you.
You could be dangerous when drunk if you get angry. My ex & son we`re angry when drunk & both got into trouble. 1 was very violent towards his wife. The other was nasty towards ANYONE. When sober both were lovely people people.
Certain drinks have different effects on me. I don't drink cider,vodka or barcardi anymore because i used to get angry when i drank those but im fine with most other things. Try changing what you drink if you still get angry perhaps you should stop drinking