1 and 2 they're pulling your leg. 3 exists, apart from a room and the govt having a quite chat, by way of a bit of clever science and sound waves though the target I believe needs to be visible and not too far away.
Consider 1, reading minds. If there was any tech that was any better than lie detection ... a scanning type system that was even good enough to hint at a rough notion of non conforming ideas [b] within minds -it would have been used and within the present government agencies and government, there would have been large changes in the power structure - more than anything reported so far.
By 2, remove memories - I have assumed specific / particular things, otherwise broadly, brain trauma and some drugs will do that.
[a] - rise of flat earth beliefs ... magnetism can be disrupted / dissolved with water ...
[b] and not intent by asking the right questions while under observation