Why was/were the firm(s) investigated for antitrust behavior?

Research articles (NO Wikipedia) using the news and DeVry Online Library (http://library.devry.edu) for a recent case of an investigation. You are free to choose the case from any industry and any part of the world. Based on the case you have selected, answer following questions.
Why was/were the firm(s) investigated for antitrust behavior?
Identify some of the costs (and nonpecuniary) associated with the behavior (firms having power in the). Additionally, note the specific antitrust act (Sherman Act, Clayton Act, etc.) under which the violation was investigated.
Given your and findings, are monopolies and (firms demonstrating power) always bad for society? Be sure to provide real world of where this may be the to strengthen your position.
Provide at least one example of a case where having a monopoly or oligopoly may actually benefit the society.
Based on your findings to the questions listed above, write a report with a minimum of 750 words in essay format in APA style (use the APA template in Doc Sharing), using correct economic terms covered in the discussions. If you ONLY write 750 words, you probably won’t be able to fully answer the questions.
Key concepts to include in your paper include the following.
Monopoly Market Structure
Oligopoly Market Structure
Barriers to Entry Into the Market
Natural Monopoly
Government Monopoly
Downward Sloping Demand Curve
Economies of Scale
Price Fixing
Collusion
Monopoly Pricing
Price Maker
Market Power
Economic Profits
Imperfect Competition
Rent-Seeking Behavior
X-Inefficiency
Deadweight Loss to Society
Marginal Cost
Marginal Revenue
Antitrust
You must use at minimum at least one article from the DeVry Online Library. Note: Although your textbook is a good source of knowledge, it is NOT an article and cannot be the only source for the assignment. Cite all your references in APA format. You can use the Citations & Bibliography function of Microsoft Word, which is found under the References tab.