There is reasonable evidence that ICE is already tracking protestors using facial-recognition technology.[1] Since ICE already has a lot of information about protestors and it is very difficult to hide information from agents, posting photos on social media makes little difference to most people’s safety, while simultaneously encouraging and informing others about the protests. Of course, there are various ways to make it difficult for ICE to identify someone, but most people are not going to do that.

The point of having nukes is to threaten destruction of an enemy even at the cost of one’s own destruction. Analysts understand that actually using nuclear weapons benefits no one. Nukes don’t benefit the party that launches nukes upon event X taking place, the party that causes event X, or most bystanders. Saying that any party responsible for event X will be nuked is intended to ensure that event X doesn’t occur. Threats are not reality: threatening retaliation is not the same as actually retaliating.

Some facts have been simplified in this reply. Reality is more complicated but these basic principles do seem to hold most of the time.

Planners do a lot of preparatory work before laying cables, but based on the few articles and studies I could find online, it appears they rarely share their findings with the public.

Sabotage can also be carried out without submarines. For example, a ship could drag its anchor along the seabed (whether in the Baltic Sea or the Taiwan Strait) near known locations of internet cables.