However, I will give you that my wording as to a business' right to refuse was too strong. There are limits. This does not fall within those. His actions led to this all-too-predictable result.
You disagree that it was self promotion. I think it is. From the author's description of the events-
The button, which was created by political activist Emi Koyama, says "Suspected Terrorist". Large images of the button and I appear in the cover story of Reason Magazine this month, and the story is entitled "Suspected Terrorist".