Not until you're part of the right crowd, you can't. Once you've made the right friends, been to the right parties, and sucked up to the right critics, then your dumpster crap will be 'recognized' as art by the arbiters of taste - until then, however, your trash from the alley is nothing more than trash from the alley.
And don't forget the cash grants from the National Endowment for the Arts you'll need to establish your "gallery creds." The only bigger con I can think of is human-caused global "warming."