Here is your problem: you view everything thru the lens of "your" community rather than the community at large. You want to protect your kids and send them to a school that will only teach a very narrow view of the world, surrounded by others from the same socio economic bubble. How can you teach kids that reality doesn't match your specific community, that they are privileged, if no-one in their bubble shows them that they are in a bubble? That is what I assume that teacher was trying to show them; that there are other structures out there that a majority of the human race has to deal with that your community is largely immune from. That is uncomfortable and it is obviously very uncomfortable to you. I'm a middle-aged white male who is not as privileged as you, but privileged compared to 90% of the rest of the world. And just because I benefited from the structures that we are looking to balance today, doesn't mean I'm racist. What makes you you, is understanding the disparity yet being too uncomfortable to want to address it so you stay in your privileged and closed community while yelling "class warfare" when called out.