In the Obama era, every thing that goes wrong is unexpected. And by “unexpected,” it means they know the reason, it’s just that they don’t want to say the reason.
And in this case, they don’t want to say that the blue party and the incumbent President of that party and his administration and also allied mainstream national news media threw a lit match into the pool of gasoline called the black undertow for partisan greed.
I don’t know what’s going on in Miami, but if crime is decreasing in Oakland, it’s because the local black undertow is being AFFHed out of town, because Oakland is too close to San Francisco and Berkeley not to gentrify. On the other side of the ledger, the worst cities for marginal crime increases are cities where high profile highly publicized (hint) police-vs-black civilian incidents have enraged the undertow, amped them up, and turned them largely against each other.