Am I the only one that read the statement? It seems to me that they are collecting information. In fact McDonald's doesn't deny they attacked him, they only state that their employees denied it. It's an important distinction. Their employees are quite naturally saying, "We're innocent!" while Mann's saying "They're guilty." Mann provided proof that one of their statements - namely that they didn't damage any of his property - is incorrect. But it doesn't seem McDonalds, as a whole, is calling Mann a liar. Here's the statement:
We share the concern regarding Dr. Mann’s account of his July 1 visit to a McDonald’s in Paris. McDonald’s France was made aware of Dr. Mann’s complaints on July 16, and immediately launched a thorough investigation. The McDonald’s France team has contacted Dr. Mann and is awaiting further information from him.
In addition, several staff members involved have been interviewed individually, and all independently and consistently expressed that their interaction with Dr. Mann was polite and did not involve a physical altercation. Our crew members and restaurant security staff have informed us that they did not damage any of Mr. Mann’s personal possessions.
While we continue to learn more about the situation, we are hearing from customers who have questions about what happened. We urge everyone not to speculate or jump to conclusions before all the facts are known. Our goal is to provide a welcoming environment and stellar service to McDonald’s customers around the world.