From BBC News on April 2: [British] Schools 'avoid Holocaust lessons'.
Some schools avoid teaching the Holocaust and other controversial history subjects as they do not want to cause offence, research has claimed. Teachers fear meeting anti-Semitic sentiment, particularly from Muslim pupils, the government-funded study by the Historical Association said. ...
"Staff may wish to avoid causing offence or appearing insensitive to individuals or groups in their classes.
"In particular settings, teachers of history are unwilling to challenge highly contentious or charged versions of history in which pupils are steeped at home, in their community or in a place of worship."