At this rate, Black Friday may soon morph into Black Thursday. Major retailers such as Target and Walmart are seeing backlash as their Black Friday door-buster sales spill over into Thanksgiving. Nationwide, employees and customers have organized walk-outs and petitions protesting Thanksgiving Day sales that start as early as 8 p.m. in large retail chains. Target announced last week it will open its doors earlier than ever to join other nationwide stores in offering deals on Thanksgiving. “Opening at 9 p.m. gives Target’s Black Friday guests a more convenient way to create an after-dinner shopping event that the entire family …