A journalist and women’s rights activist hit back against Gov. Sarah Huckabee’s Sanders — who attacked Vice President Kamala Harris this week, saying Harris has nothing keeping her “humble” because she doesn’t have biological children — and revealed her theory as to what’s driving the GOP’s “offensive” attacks. Gretchen Carlson, an author and advocate for women’s rights known for her role in the #MeToo movement following her high-profile sexual harassment lawsuit against Fox News chairman Roger Ailes, told CNN anchor Anderson Cooper that the parents of stepchildren are the real people who dese…