This afternoon I'm planning on smashing items in the antiques shop.
Is there any reason for that? Why do you want to smash antiques?
I will do it and I'm not sorry!
Never destroy anything that does not belong to you. You will definitely get caught and will not only serve time, but also have to pay back the owner for all the damages.
I'm going to do it and I don't give a shit.
You should consider what it would be like if someone came and smashed your things. You shouldn't be so disrespectful towards other's things.