What’s the harm in buying a knock-off purse or a fake designer watch?

According to counterfeit investigator Alastair Gray, fakes like these fund terrorism and organised crime. Learn more about the trillion-dollar underground economy of counterfeiting — from the criminal organisations that run it to the child labour they use to produce its goods — as well as measures you can take to help stop it. “Let’s shine a light on the dark forces of counterfeiting that are hiding in plain sight,” Gray says.

Click HERE to see his video on the TED website.