Bear on mind, casual readers looking at comments to “shut it down!” will think such comments are extreme.
1. The FBI has existed longer than most everyone living today.
2. The FBI has a historical reputation of investigatory integrity.
3. The FBI has a legacy of high standards.
Now what could possibly have happened to the FBI that would cause a significant number of people to suddenly demand it be shut down?
This recently resigned FBI agent explains how it happened at time 4:14 of this 6-minute video:
https://www.youtube.com/watch?v=vshTBJ6aiLM
Yes, the FBI has existed for a long time. So did Soviet Union and tens of millions were murdered. Longevity is not a virtue. Your other two points are factually incorrect.