Catholics in the U.S. should definitely participate.
I worked for a Catholic religious goods company some years ago and they used to laugh at me when I would set up a book table for Black History Month. Yet there is a very long history of African/Black Catholics in the Church - many great saints.
The history of the Church is full of many Black / African Catholic saints, who received recognition for great deeds or meritorious conduct. Many lost their lives in defense of the faith. Many were also honored for their contributions to the Church and their community. Go here for more information.
It is quite a long and impressive catalogue.