The BitTorrent protocol splits a file into smaller chunks. When you torrent a movie, you download these chunks until you have the whole file on your computer. You also share the chunks you already have with other downloaders. This means that when you torrent a movie, you also share it with others.
When you browse the internet or torrent movies with a VPN, the remote server sees the VPN's IP address, not yours. This means that copyright lawyers cannot see your IP address. They can't easily trace illegal downloads back to you. Using a VPN makes torrenting much safer. 1e1e36bf2d