Disclaimer: was accepted to one of the HBCUs as an Asian. You might be surprised to find out that HBCUs aren't exactly "safe" schools. The HBCU I applied to had ~9000 applications, but only interviewed ~300 people for a class of 120. The acceptance rates are on par with top-notch schools like UCLA, Mayo, etc. Some of the HBCUs (like Morehouse) may target individuals from specific states too, which complicates things when applying.
If you apply to these schools (really, any school in general, but ESPECIALLY for HBCUs), make sure you fulfill their mission. You don't have to serve the African American community necessarily; my school had a mission statement that encompassed the underserved in general. So really, it could be African Americans, Native Americans, Hispanic/Latino communities, homeless population, etc. For me, I didn't serve the AA community, but did work with the homeless and Native population in my state and have a desire to return (although I did have high stats comparative to the school's median which may be a confounding variable).
Tl;dr: Make sure you're in line with their mission and make that crystal clear in your application, should you apply. Typically the specific communities you work with don't matter (may be dependent on the school's mission)-the idea is that you have a track record of serving the underserved/communities of color and that you want to continue serving them in the future.