So, Facebook took messages that were sent from the FBI and handed them over to the FBI.

Yeah. That’s called Facebook Messenger.

Knowing how violent they can be (protected by kikes and local liberal mayor/police), I wouldn't be surprised if they decided to do some terror attacks on Facebook buildings/assets.

I bet FB rushed to alert them. Is that obstruction of justice? I thought that's why some companies and sites have "warrant canaries". They periodically update that they have received no warrants and if the updates stop....

I hope the FBI doesn't lose them or have a glitch in the algorithm.