No, it isn't. They are in violation of the Communications Act of 1934, and it's been tested in the courts many times. There are no exceptions for "urban" radio stations.
Indeed. And as some have pointed out what if this were a white-oriented station from the Charlestown section of the city? Would he be this up in arms if they had been raided?
This is why we need to question everything the Feds do. Under what constitutional authority does the federal government have to shut this station down if:
1. The radio signals never cross a state line and
2. The signal is not interfering with licensed stations that have signals which cross state lines and
3) the station is not operating for the purpose of making money or otherwise engaging in interstate commerce?
Just because something has been upheld by the courts doesn't make it constitutional. The courts have become an arm of the oligarchy and the tools of creeping totalitarianism.