Crock Pot Pulled Pork Tacos

Name: Crock Pot Pulled Pork Tacos
Ingredients: 3 lbs boneless pork butt; 1 (6 ounce) can tomato paste; 1⁄2 cup barbecue sauce; 1⁄3 cup white vinegar; 2 tablespoons dark brown sugar, packed; 1 tablespoon lime zest, grated; 1 tablespoon chili powder; 2 garlic cloves, chopped; 1 teaspoon salt; 2 cups Coleslaw; 1 scallion, sliced; 12 taco shells; 1 large tomatoes, chopped