This time, in Great Britain:

Schools are dropping the Holocaust from history lessons to avoid offending Muslim pupils, a Government backed study has revealed. It found some teachers are reluctant to cover the atrocity for fear of upsetting students whose beliefs include Holocaust denial.

And, its not just 20th Century history that is getting ignored in the name of being solicitous to ethnic sensitivity:

There is also resistance to tackling the 11th century Crusades – where Christians fought Muslim armies for control of Jerusalem – because lessons often contradict what is taught in local mosques.

Because, you know, the 11th Century was just yesterday.