Here's my submission to the mcdonalds feedback page:

https://www.mcdonalds.com/us/en-us/feedback.html

"It's disgusting that McDonalds allowed a fascist to use one of its locations to film a campaign event. It is beyond disgusting that a company as American as this allows its image to be associated with someone so vile, violent, racist, and Unamerican. Until the company breaks ties with the franchisee, publicly apologizes, and rebukes any endorsement of Trump, it is a de facto endorsement of fascism and hate. The company should know better than to allow this, and steps need to be taken to ensure that consequences are dealt for such brazen abuse of your company image and name."