I suspect they're willing to take the risk to try and warn others. This is sort of a middle ground approach. They're banking on Trump not being able to retaliate in time before they leave the country, he's moving fast, but he's not at the imprison political opponents stage yet. He will be soon, but they've got some time.
In the meantime, it serves as a warning to us and others to get out if you can.
Agreed.
Unrelated, but it's narcing. Narc is short for narcotics officer.