Not sure why the left want to teach children about crossdressers?

Not sure why the left want to teach children about crossdressers? I had someone tell me that they seem to want trans history being given as a lesson. As you know trans is an umbrella term and includes crossdressers. So presumably they see it important to teach people (presumably children) about crossdressers. Or perhaps they want to teach children about Ed Gein who murdered people and kept the skin and body parts because he had mental health problems from being transgender (the film Psycho (1960) and The Silence of the Lambs are influenced by him. Also the Nazi party were socialists (it is in the name). In fact Oswald Mosley who set up the UK version of the Nazi party was at one time a Labour MP.