>You realise the slippery slope is also the name of a logical fallacy right?

You know that "logical fallacies" are BS that have nothing to do with Logic (formal logic and reasoning) and are wrong in thelselves besides, right?

>Where is the chain of events that connects them? that makes the argument a logically valid slippery slope as opposed to a fallacy?

It's called the "Overton Window". Check it out.

Oh, and the "chain of events connecting them" is the all increasing deployment of surveillance since the mid 20th century. An actual "slippery slope" in action, if I ever saw one.