This is not the first time that the Home Office has used its discretionary powers to bar someone from entering the UK, nor surely will it be the last, but I cannot recall in my adult lifetime such powers ever being used against an elected, serving politician from a friendly, democratic country. And a member of the EU to boot!
Geert Wilders had been refused entry to the United Kingdom to broadcast his controversial anti-Muslim film Fitna in the House of Lords.
Mr Wilders said he had been told that in the interests of public order he will not be allowed to come to Britain.
Under normal circumstances, I would devote the rest of this article to speculation about the reasons behind this extraordinary decision. But, in this case, that would be redundant.
We all know why.