I'm not sure I should be concerned based on this video, where the maker / narrator is not seen. It would have more credibility if the narrator was himself black, so the racial bias element could be dismissed. The audio was also poor, and I have a slight hearing impediment, so I really couldn't understand what he was saying. Were these men here legally? Were there women who were indoors?

Nearly every city has a large contingent of African nationals---green-card holders and naturalized citizens, often working in the medical industry as doctors, nurses, or other care-givers. The simple fact is that there is a widespread labor shortage in medicine and home care, and we employ foreigners because they are willing to come and take the jobs. (This is also happening in the United Kingdom.) My wife is such a person. Many work here to build up capital and resources, which they can then use to build homes back in Africa. Some are happy to succeed in America and have had children who are fully assimilated and would not want to leave. They are peaceful and inclined to keep their heads down. No reason to worry about them.

My point is that without additional information, one cannot conclude much about an African who is not very conversant in English. Some African nations speak French or Portuguese as the unitary language. Sometimes, the person has only spoken in their own vernacular and is now having to learn English on the fly. If the complaint is that some newcomers haven't assimilated, that is a blame to put on this administration, which is delinquent in that whole process. It can hardly be otherwise, when the national policy is to open the borders with no vetting or requirements for citizenship.

I am, of course, talking about legitimate immigrants, not refugees, nor illegal aliens. I would just point out that there is no way to tell the difference by looking at skin color or complaining about their English. And I don't like the murmurs of how we may need to take arms against them (e.g., "frogface").