In this case, it's the continuation of a trend that has been happening since well before Trump was ever president, so seeing record lows is exactly what was expected.
Also, murder is primarily a state-level charge, not federal, so it's the states who keep these statistics.
True, but my point is that what's being reported is a continuation of a solid trend that has been going on before any Trump people were anywhere near.
The FBI is certainly not trustworthy, but in this case what they're saying is in line with what the normal expectation would have been. I believe the stat because it's the least surprising, not because the FBI said it was so.
Also, murder is primarily a state-level charge, not federal, so it's the states who keep these statistics.