Who would decide what constitutes extremism? Would it, by any chance, include any comment that criticises the Conservative Party? Would it, perhaps, include any call for a public demonstration against Tory policies?
It seems that, far from such activities posing a threat to the functioning of democracy, it is this proposal that creates the greatest risk.
David Cameron is to lay out the plans for wide-ranging new powers to the National Security Council.
They have been introduced in the context of increasing Islamic extremism but cover the “harmful activities” of all extremist individuals — including those that pose a risk of public disorder or a threat to the functioning of democracy.
The package of powers was first proposed in March, but were vetoed by the Liberal Democrats on the grounds of free speech.
The plans would allow the police to ask the higher court to order extremists to be banned from broadcasting and send every tweet, Facebook post or other web communication to the police for approval.
That would include posts from users telling friends and followers that their communications were now being vetted, or ones denying the extremism claims that led to them being charged under such measures.
Ofcom is also expected to be given new powers that will allow it to take stronger actions on the channels that it regulates.
That includes telecommunications firms as well as its more conventional role of regulating TV and other broadcasts.