White people didn’t inject racism into these books. The left did. Seuss didn’t write these books in question with any racist intent, and no one reading them became an ounce more racist for seeing them. It took the left arbitrarily making it racist for it to be a racial issue.
The real reason conservatives (and it’d be more accurate to say Americans across the political spectrum) are mad over the cancelation of certain Dr. Seuss books is very simple; we don’t want to be the culture that burns books because we disagree with what’s written in them. We want to be a society that’s mature enough to make our own decisions about what is and isn’t bad, and to be able to weigh what is and isn’t racist for ourselves. What we don’t want is a group of hyper-sensitive busybodies with chips on their shoulders and a holier-than-thou complex declaring what is and isn’t appropriate for our culture to see. We especially don’t want corporate businesses making that call for us as well.