Bill, I think "witch hunt" is too strong a term in this instance. Nor do I feel that the response of the public is an emotional one. In fact I believe it is the park which has acted emotionally (rather than with foresight or evidence) by banning single adults. I'm a great believer in my right to an opinion, and to free speech, and I think it's perfectly understandable that there should be a degree of public outrage to what is a very clear incidence of discrimination. We can of course write to higher authorities, and I believe that everyone should do that (however in my experience it doesn't seem to achieve anything) as a matter of principle. But in cases like this, it's unavoidable that the wider public will get involved, in fact that can be a very effective course of action and I feel the comments so far are justified - certainly not inappropriate or threatening. In setting forth terms of entry which are extreme or prejudicial the park must accept that at some point there will be complaints and perhaps a backlash, it's their choice after all. They have handled the response very badly in my opinion, by putting out a statement which has more holes than a punch card.
However I do agree that visitor numbers will probably not be reduced, simply because their key client group will not be affected.