"The West Bengal Board of Secondary Education had issued instructions in 1989 that ‘Muslim rule should never attract any criticism. Destruction of temples by Muslim rulers and invaders should not be mentioned. (…) With the sway which Marxists have ensured over the education department, each facet at every level will be subjected to the same sort of alterations and substitutions that we have encountered in Bengal – all that is necessary is that the progressives’ government remains in power, and that the rest keep looking the other way."
January 1, 1970
https://en.wikiquote.org/wiki/Historical_negationism