Should those offended by child labor/sweatshops go protest in front of mall/stores, hurting their wallets?

There are so many stores and brands like Nike, Puma, Reebok, Adidas, Victorias Secret, Macy's, Eddie Bauer, The Gap, Abercrombie, Old Navy, etc. that use child labor and sweatshops. Shouldn't we ACROSS THE COUNTRY go protest in front of them, run their business down in this CRITICAL time of the year and FORCE change??