> A fun prank: Create realistic facebook profiles for people you hate, and send links to CBP right before they travel.

During the Chinese cultural revolution in the 1960s, anyone could anonymously post the names of "people they hated" as suspected counter-revolutionaries on public bulletin boards. A "fun prank," maybe, except that many of those reported were executed. [1]

This was contemporary with humans traveling into space. We're not out of the woods today—if anything, technology has raised the stakes.

[1] https://books.google.com/books?id=AfIydrsE6aMC&pg=PA163&lpg=...

it is illegal to create a profile for someone else, i.e. to impersonate someone: http://blogs.findlaw.com/blotter/2011/11/fake-facebook-profi...