This guy (31) had hired me (19 at the time) to create paintings and curate art in his "gallery", but he payed me lemons and insulted me regularly, not to mention he made me do janitor duties without extra payment.
One day I was venting to my dentist (of all people) and didn't realize my phone had accidentally dialed my boss's number, so the guy heard everything, he dialed back immediately to fire me.
So I went the next day to pick up my stuff and the guy was nowhere to be seen.
But I was able to recover most of my materials (he didn't even provide most of the stuff needed, only the canvases) I also took a painting that was made under the understanding that it was my property untill he payed full price for it, given that he was unable to pay me properly anymore.
Days later I realized I had left my easel there and went to recover it, I put one leg inside the gallery and grabbed only the easel, and left.
The guy immediately comes off running screaming that I stole his painting, and when I ignored him he called the police and accused me of trespassing.
So I was scared, crying, my parents were there, not calling an actual lawyer or anything and making everything worse.
The police felt so bad they didn't even lay a hand on me and aside from actually listening to my full story, the offered a shoulder to cry.
At the end I signed a paper that said I wouldn't accuse him of labor abuse (no written contract, no proper payment, verbal abuse and etc.) if he dropped the charges.
My parents still felt the need to scold me and I was left so disappointed I abandoned painting for a decade.
So I learned 2 things:
1- don't be a retard
2-shop owners can sue you from entering a store with public access.