Parents against love

Me and my girlfriend are in relationship and we are staying together from more than three years. We have gone through lot of things I agree I even raised hand at her certain times with angry for repeatedly asking same question some times and I promised her we will marry by accepting our parents but my parents are not at all accepting and they’re forcing me to marry another girl. I tried alot and even my girlfriend tried to ask my parents but they’re telling they’ll die if I marry her and they’re keep on crying telling they can’t face the society and they can’t take it. My girlfriend is also not understanding she’s telling she can’t leave me she will go to any extent for me even she’s telling she will file a complaint for having physical relationship and domestic violence. I am really stuck in between I am not able to see my parents cry and I told her I’ll listen to my parents only. Now I want to know is there a chance I can defend myself if my girlfriend keeps any complaint or if she try to do any mess or is there any way I can get help to convince my parents. Suggest me what can be done for best