Explainer: understanding Sopa

Will 2012 see the end of the internet as we know it? The House Judiciary committee tried to finalize the Stop Online Piracy Act (Sopa) before Christmas for a vote early next year. But fierce opposition – much of it online – seems to have given pause to the bill's main author, Lamar Smith. He is now expected to hear from expert witnesses early next year before the bill goes to Congress. Watch this video for a guide to the fight that will likely become one of the big stories of the coming year