More than a month into her presidential candidacy, Kamala Harris has so far managed to brush off a deluge of attacks from her Republican opponent — and one columnist wrote Friday it’s “driving him crazy.” Karen Tumulty, a columnist for The Washington Post, called out a “standout moment” from her first sit-down interview as Democratic presidential nominee. When CNN anchor Dana Bash asked Harris her thoughts on Donald Trump’s questioning of her racial identity, Harris needed just a handful of words to deftly swat away the attack. “Same old tired playbook. Next question, please,” she said. Want m…