Race and childrens TV

Race in Children's TV is a huge ordeal in the US with parents trying to raise there children in a non racist way, which is surprisingly a lot harder than it seems, because race is everywhere. I am a nanny and i am surrounded daily with children's programming and i am honestly surprised with how much racist slurs there are in different programs. Whether it be Disney or Thomas the Train there is always a bad guy or someone who is a little slower which is typically reflected on race. I honestly think these shows affect how children look at race and people of different colors because children are so curious about it. I wonder how and if this will change in the future for the better or the worse.