Maybe this Dutch Liberal should be more worried about the millions of illegal Muslims invading his country, with the help of their Open borders policy.
His country, Holland, will become Sharia compliant in another generation or two.
When that happens, he may have to leave his native Holland and immigrate elsewhere, where he is free to talk... that's if he doesn't get his throat slit by a disgruntled or mentally retarded member of the Religion of Peace...
Just like what happened to Theo van Gogh, the Dutch film producer, who on the 2nd November 2004, was
assassinated by Mohammed Bouyeri, a
Dutch-Moroccan Muslim who objected to the controversial film.
The last film that
van Gogh had completed before his
death, was a fictionalized exploration of the assassination of
Dutch politician Pim Fortuyn, assassinated 2 years earlier in 2002, by a Left-wing activist.
https://en.wikipedia.org/wiki/Theo_van_Gogh_(film_director)
That Dutch Historian should definitely spend more time criticizing his country's Politically Correct politicians who are helping to destroy the character and culture of their once fantastic country...