<human>: I thought my parents were too strict with me. I'm studying informatics engineering at college and I'm living with my parents. I'm 19 and they treat me like I'm 11. 
Among the "crazy" things that I had to deal with are:
Closing the kitchen and computer room at 10pm-11pm (yes I'm not allowed to have my laptop on my room).
Being told the family's plan the day before the events.
Having constant fights with them about stupid, little things.
Something else that I can't recall now (because I just broke into the computer room by force and I'm in a kind of adrenaline rush)

So, today we were going to have lunch with the parents of both me and my sister's godchildren. I woke up at 9:50, checked my mail (with constant threats from my dad, so I left in like 7 minutes), took a bath, shaved and then I went to my room to dress up. I saw my guitar laying on the floor. I thought I would play one simple song before dressing up.
I played like 3 verses of the song and my mom rushed in my room started demanding me to tidy it up. And I told her to get out (so I could dress up, etc, but I didn't say it out loud).
My father rushed through the hallway like a spider out of it's nest. Grabbed my guitar and in what looked like slow-motion to me shred the guitar to pieces on the edge of the bed.
They left like 30 mins later and locked everything, took my cellphone and cut the phone like.
I broke into the computer room (the only place with a working phone) and Now I'm standing here, asking for guidance.

I'm not a very aggressive person. I try to control myself a lot. But I simply don't know what to do now.

I can't simply leave and never see them again.
I don't want to quit my course.
Getting a job is not easy where I live (Portugal).

Could you distill the essence of the text into 1-3 sentences?
<bot>: My father broke my guitar for doing nothing more than playing it for 30 seconds. This is the last drop in the bowl for me. What should/can I do?*