It was a simple question. The reporter just wanted to know what the President would do about an increase in anti-Semitic activity. But, the President, perhaps feeling defensive already, accused the Jewish reporter of asking an unfair question. He explained why he is not prejudiced against Jewish persons. But, that was not the question. If you cannot ask the President of the United States what he will do about rising anti-Semitism, who can you ask? See CBS news report.
It does not matter the cause, at least not yet. But, there is a rise in bomb threats against Jewish Community Centers across the country. The President is in a good place to speak against that sort of ethnic prejudice. Unfortunately, Pres. Trump either misunderstood the question or chose not to answer. He told the reporter it was an unfair questions and he should sit down.