Re: The Minority Report
"If algorithms are ever allowed to stand for probable cause, we are well and truly screwed."
Are you kidding? Lesser things than that have been used to assume guilt and go straight to conviction for ages. Here in the US, merely owning a lockpick tool (if not a licensed locksmith) used to send you to prison. Only a burglar would have those, so having one means you're going to break into somewhere, right? That one was finally overturned in most places.
Cops are not very good at solving crimes or catching criminals. They love no-brainer If-Then presumptive guilt laws, because they can jail people without having to actually catch or prove a crime. So YOU BET that algorithms are the future of Sending People To Jail (notice I didn't say Justice).