Is downloading or sharing music, software, games, or movies ethically justifiable if you have not paid for them and the corporate owners, creators, or artists have not given consent for them to be shared?

Is downloading or sharing music, software, games, or movies ethically justifiable if you have not paid for them and the corporate owners, creators, or artists have not given consent for them to be shared? How would you respond if your art/design work was being “shared” without your consent?