Boogie can be used as a derogative term for an African American, or any person of African descent.
In this context, the term is very derogatory. It's like saying "porch monkey" or other hate speech.
This may derive from the boogie being a kind of musical rhythm, which due to 'successful' african-american dance trends, became associated (in the USA?) with people of African descent in general. Add a dash of multi-directional racism (e.g. "white people can't dance") and you get the term 'boogie' being applied as a derogatory noun representative of a 'category of people.'
Can't check sites with hate-speech from here, but here is an ngram link for a casual reinforcement of this point.