In 'Little Fires Everywhere,' it’s interesting to see the '90s reflected from this distance of more than 20 years. But the identity politics is suffocating. Reese Witherspoon and Kerry Washington face off as the opposite kind of mom in Hulu’s new “Little Fires Everywhere,” a series based on the popular book by Celeste Ng. The two women’s lives intersect in the small, idyllic, town of Shaker, Ohio. One mother is drawn to Shaker for the good school district, while the other has been there her entire life, and her legacy comes with power and influence. While the show is about...