It's understandable that what's happened would provoke this kind of feeling in you - especially given that it was a celebration of Black History Month and they also served food that could be associated with a stereotype.
I can see why you might feel that this was problematic, and it makes sense that you'd want to address it.
Are you able to talk to the people involved in planning the event about how this made you feel, and what you'd prefer to see in the future if something like this were to happen again?
As for my personal opinion I couldn't care less if people reproduce stereotypes, to me at least it's just food, unless there was a verifiable "intention" to offend Black people then there's no issue for me.
