Dr. Seuss Enterprises' stopping sale and distribution of six books in response to external opinion is no more "giving in to the mob" than is Coke ending "be less white" employee training' in response to external opinion.
Coke ending it's "be less white" employee training is good. Dr. Seuss Enterprises not selling certain books because they somehow offend a vocal minority is bad.
And yes, I am making a judgement because there is such a thing as good and evil.