If you notice these raids, they tend to be outside the areas where drug sales are frequent and chronic. Why is that?
I'll tell you. Raiding a house in the "inner city" is dangerous. I don't care HOW many SWAT people you have, or how many full auto weapons they bring, raiding a crack house in Detroit or Chicago will have Bloods and Crips opening fire on your team from every window up and down the block. Your SWAT armor won't mean diddly as they toss Molotov cocktails on your head. If you return fire, you will ignite a riot which will have half the city in flames by nightfall, and everybody from Al Shapton to Obama will be after the heads of everyone involved.
It's much safer to exercise your SWAT gear in the suburbs, against a white family that nobody will riot over.
And as a bonus, if you do find some drugs, you can confiscate the house under Civil Asset Forfeiture laws.
Now tell me, which is more profitable to law enforcement, seizing a crack house in the badlands of Detroit, or the nice home pictured above?
And if anything goes wrong, it's just a bunch of white people. Nobody's going to riot and burn the city over this little kid:
Sleep well.