The Brown University shooting gave us an example of a botched investigation. Failure to call it a terrorist act prevents the FBI from investigating and leaves it to the local municipalities to investigate, who have limited resources. First, they had no witnesses and could not find the shooter. Probably because they sent everyone home before asking questions. Then there was a lack of camera footage.
The suspected shooter ended up dead, like many others.

The first installment of the Epstein files showed us nothing new. The DOJ disclosed a short version of the files after redactions along with information claiming the FBI still has national security reasons for witholding much of it. Protection of high profile politicians?