Also, because the United States is inherently and was built on anti-Blackness. America had several opportunities to address Black people and/or enslaved African Americans and it purposely didn't. Doing so would've triggered an earlier Civil War, further embarrassed the states in the international community. They changed election laws to avoid acknowledging our presence (3/5s compromise). And the amendment to "free" us is still being used to disproportionately throw us in chains.
Even the Civil Rights Acts, the shyt that guarantees us equal protections under the law, is worded in a way to prevent any explicit preferential treatment to Blacks under the law. It low key as anti-Blackness baked into it.
But I can go on and on about how anti-Blackness built and maintains this nation.
The constitution doesn't even directly address us. Our enslaved ancestors aren't even a federally recognized group. Our ancestors are called "such persons", google the term.
We don't get shyt because founding cacs designed the laws of the nation to ignore us. Even the ones who were sympathetic to abolitionist causes still cosigned a document saying "all men are equal and have the right to liberty", knowing it was a lie. America's anti-Blackness is a necessary evil.