Run! The sea is on fire!
Did I just caused a global panic and send everyone fleeing to the hills? If not, then perhaps a people have enough sense not to believe every scare story on the internet.
On the other hand if officials are terrified that a single tweet will lead to a run on the banks, it implies that there is independent evidence that the bank is in trouble that will convince lazy skeptical internet users to get up from their comfy chairs and go out to withdraw cash.
Quick! Lock up the Guatemalan police, the superintendent of banks, and the president for using the Streisand effect to destroy the world's economy.