Michael Savage, the incendiary radio host who last week characterized nearly every autistic child as “a brat who hasn’t been told to cut the act out,” said in a telephone interview Monday morning that he stood by his remarks and had no intention of apologizing to those advocates and parents who have called for his firing over the matter. “My main point remains true,” Mr. Savage, whose radio audience ranks in size behind only those of Rush Limbaugh and Sean Hannity, said in an interview on Monday. “It is an overdiagnosed medical condition. In my readings, there is no definitive...