The political consultant’s new book, “The Clintons’ War on Women,” is the top-rated political history seller on Amazon, but the online retailer was flooded last week with one-star reviews. “My publisher [Skyhorse] confirmed with Amazon — they were all from the same URL, at Hillary’s HQ in Brooklyn,” Stone — whose clients have included Richard Nixon, Ronald Reagan and Donald Trump — told me. “Why are they so afraid of this book?”