Over the past 18 months, I have been the subject of intense speculation and public scrutiny, in large part because of the philanthropic investments of the Mercer Family Foundation and the political contributions made by my father and me. I don’t seek attention for myself and much prefer to keep a low profile. But my natural reluctance to speak with reporters has left me vulnerable to the media’s sensational fantasies.

Some have recklessly described me as supporting toxic ideologies such as racism and anti-Semitism. More recently...