PSA: A local cat is taking garden gnomes and I'm stuck on the right thing to do

This stray cat in our area has been moving garden gnomes from yards to the park. I saw it drag one from my porch last week. Now I have to decide if I should take the gnomes back or let it be a funny community thing. It feels wrong to mess with the cat's new hobby, but people are missing their decorations. Is it okay to just laugh it off?