I ordered a black light lamp and it was broken!

I ordered this black light lamp from the customer and could tell by the sound in the box it was broken! I mean DESTROYED! I got home from the post office and I went to open the first lid of the box and there was shards of glass on the tape that I got into my finger right off the bat!! I hurried and shut it and asked for a return label as I didn’t want this all over my house or porch or yard!! I have small grandchildren that I’m raising and Frenchie dogs that are worth a lot of money. I got a hold of Poshmark and they want me to totally take it out of the box and get the shards of glass everywhere and possibly get me or my grandkids or my dogs injured just so they can get better pics of something broken! I would have nothing to gain in lying! I NEVER thought I would have a problem returning this light after I sent pics and explained the issues of glass and this is not small light so there’s many tiny shards! You can tell the boxes full of them! Everywhere!! Poshmark is refusing to give me my return label unless I take it out of the box and take more pics. So I will be posting more information with pictures tomorrow because they care nothing about their customers! They should care about the buyers just as well as they care about the sellers! And the only reason why they care about the sellers is because they get part of the money! As I tried to list this it flagged breakable item and this screenshot that I posted is what it says! But yes I will not send me a return label!