Do you know why felons can't vote? How that started?
It was after the Civil War. Black people had the right to vote, but the Southern states didn't like that. They couldn't just say "black people can't vote anymore." That wouldn't have been allowed. So instead, they used a bunch of different voter suppression tactics to reduce how many black people could vote.
One of these tactics was removing the right to vote from convicted felons. The states first said that convicted felons couldn't vote. Then, they decided which crimes were felonies based on how many black people were convicted of those crimes. (Note, this might not have been how many black people COMMITTED the crimes, but how many black people could be rounded up and convicted despite the evidence.)
Black people in the South would get arrested for various crimes (again, with or without evidence), get convicted of felonies, and lose their right to vote. Even if they weren't convicted or charged, the message was clear: Stand up politically against White Men and you'll go to prison and lose your rights. The large black voting groups got smaller and smaller.
Removing the "felonies remove voting rights" rule reverses a discriminatory practice.
Understanding demographics is not racist. Black men are convicted and incarcerated more often than anyone else in this country because our justice system is weighted against them.
Not when you understand the disproportionate incarceration of black people for the same crimes. Like how the war on drugs made lot of drug crimes felonies with the intention of disenfranchising the black population through unequal enforcement. Plus Jim Crow laws and everything else that disproportionately punishes black folks based on criminal history.
Understanding history is why we know racism is a major component of anything that removes the right to vote.
You do realize, this is a classic Jim Crow technique to surpress votes from those you don't want to vote. For exampl, you could make it a felony to be late for a rent but then the county only choses to prosecute people of color, but gives "grace" to white tenants.
They also chose crimes that can be pinned on black people whether or not they did them.
For example, drugs. Want to take out a black person that's "causing trouble?" Just arrest them and conveniently find drugs in their house. Maybe the person really knows that you planted them, but who's the white judge going to believe? The black man or the white police officer? The black man is now a convicted felon, behind bars. Even if he's released, he still can't vote anymore.
Repeat a few dozen more times and you can stop black people from "causing trouble" just with the constant threat of arrest hanging over their heads.
Careful, there's very little that separates you from those you wish to disenfranchise.
You might want to check out Anthony Ray Hinton's The Sun Does Shine for a memoir of what it's like to be wrongfully sentenced to prison for nearly 30 years all because your friend was mad at you over a girl.
There's also the case of Crystal Mason who's in prison, right now, despite comitting no crime.
Criminal justice reform is extraordinarily difficult in the US because citizens with first hand experience are disenfranchised. Everyone affected by society should have an equitable voice in society - there should be no disenfranchised underclass.