A quick one.
The guys over at Matrix.org (Matthew Hodgson, specifically) have posted a proposal for addressing the concerns of the police and politicians around illegal material being available on the internet through channels that employ end-to-end encryption.
As you can tell, I'm very much a "you can't do that" person on this site when it comes to the proposals to interfere with the security of ordinary users on the internet.
Matthew describes a proposal that not only does something, but it's something that has the potential to address the real problems that the police and politicians are concerned about.
And see my posting for how that is fundamentally impossible, though attempts will not be without some serious collateral damage!