So Meet the blacks is a parody of film, the Purge. Most of the comedy that I'm seeing comes from the fact that they are giving the same message as the Purge only being a lot more up front about it.
The Blacks stumbled upon some money and moved from the ghettos of Chi-Town to a luxurious space in Beverly Hills, where they thought they made it to a social status that made them immune form the annual purge, but of course when it begins, guess who all the purgers on the block come after. In all fairness, the neighborhood's dislike of the new family lowering their property value is the least of the Blacks' worries.
It's works as a look on social commentary the same way the Purge did. It also works better if you think of it as a series of sketches on a comedy show. Not every sketch is good but I got some laughs from George Lopez who played president La Bama ( a Mexican parody of President Obama). The great Charlie Murphy who plays the gangster the blacks stole money from to movie to Beverly Hills, and Mike Tyson who does not need to try hard to be funny.
Also like to give a shout out to the the gorgeous Latina they got to play Step-MILF Mrs. Black. From the moment she came on the screen her only job was to be eye candy and she did the job well and excelled.
I'm taking the movie for what it is. It's not Scary movie it's Scary movie 5 (which also features Iron Mike). It's not going to win any awards or gain an critical acclaim, but it made me laugh. Job well done.