“There are too many politicians trying to score political points trying to ban books, even math books. Did you ever think when you’d be teaching you’re going to be worried about book burnings and banning books all because it doesn’t fit somebody’s political agenda?” Biden said.
This is a perfect example of blaming the other side for what you yourself are doing, and also exaggerating for effect. Nobody is "burning books".
Instead, parents are questioning, as is their right and duty, why (for example) math books have suddenly infused their lessons with race and gender politics, and why teachers unions are trying to keep them from knowing about it.