Dan Gordon, the screenwriter of “The Hurricane” and “Wyatt Earp,” resigned from the Writers Guild of America on Tuesday over the guild’s silence on the Hamas attacks on Israel. A 56-year member of the union, Gordon is also a veteran of the Israel Defense Forces. He grew up in Israel and the U.S., and holds citizenship in both countries and in Canada. He wrote a letter to WGA West leadership on Tuesday saying he will elect “financial core” status. In an interview, he noted that the guild had previously taken stands in support of Black Lives Matter and the #MeToo...