Final answer:
Critics believe Walmart is an unethical company due to its negative impact on small town economies and labor violations such as illegally penalizing and firing workers who participated in protests and strikes.
Step-by-step explanation:
There are several reasons why critics believe Walmart is an unethical company. First, Walmart's business model is accused of negatively impacting the economic structure of many small towns. By driving out locally owned businesses through their advantage in economies of scale, Walmart can cause harm to the local economy. Second, Walmart has faced allegations of labor violations, including illegally penalizing and firing workers who participated in labor protests and strikes. They have been required to pay millions of dollars in back wages and compensation damages to workers who were denied jobs based on their sex. These labor practices contribute to the perception of Walmart as unethical.