How are you suppose to do a pornography bust on the internet without actually providing some product?

I don't know, but "you can't bust people if you don't do X" is not a good argument for X being OK. Not all criminals must be caught, and we generally value the integrity of law enforcement over catching every single bad guy.

If the police took over a site they've got evidence from crimes already committed. They need to identify the perps though, they could do something with drive-by malware downloads that paired the usernames from the site with people subsequently trying to gain access. The police/authorities should be able do that whilst respecting the victims by not themselves peddling underage porn.

That seems like the police would have enough to arrest people and do a full investigation of their computer storage. Then should corroborating evidence be found they could charge the people; publishing details of convictions later.

It seems that by continuing to run the site that police enabled crimes which otherwise might not have been possible.

Some way to save the file?

It's a crappy hack, but paste this into your JavaScript console:

    function exportFile(path) { var b = new Blob([FS.readFile(path).buffer], {'type': 'text/plain'}); var u = URL.createObjectURL(b); window.location.href = u; }

And then you can run this to export files:

    exportFile("/usr/local/share/vim/vimrc");

The money laundering was the moving of funds to savings accounts, and other accounts in his name or business name. It's money laundering because the proceeds were allegedly derived from an illegal act. But not what people typically think of money laundering.