A national police unit that uses undercover officers to spy on political groups is currently monitoring almost 9,000 people it has deemed "domestic extremists".
I couldn't help but wonder if writing this blog counts as political extremism.
If so, how?
Is it extreme to ask people to pay their tax in the right place, at the right rate and at the right time? I suspect it is. But if true it would show how absurd such monitoring was.
And, of course, the Met may have no interest in me at all.
But that's the problem, isn't it? Not knowing is what makes so much of this activity so deeply pernicious and contrary to any concept of society.