Any idea can be brought into the classroom if the point is to inquire into its structure, history, influence and so forth. But no idea belongs in the classroom if the point of introducing it is to recruit your students for the political agenda it may be thought to imply.
“As a kid growing up in the back streets of Dublin I used to pretend I was playing in the World Cup with my mates out on the streets, and now I will be doing it for real.”