Unions. I know there are good teachers out there as well as bad, left leaning as well as right. But, when they continue to support and allow their union to issue propaganda crap like this....SHAME ON YOU! What is really scary is that there are many teachers that agree with and support this kind of garbage and they are teaching and indoctrinating our children from Kindergarten through College.
Side note: Interesting that they have to make cartoons; kind of telling of the mentality of the audience.