Trump supporters are just now realizing that their kids are about to learn about all the atrocities they tried to hide.  They are absolutely desperate to keep their kids from learning who their parents really are, so they will stop at nothing to shut down the 1619 Project.  

When you deny kids the information they need to make an accurate assessment of the world they live in, we end up with people like Kyle Rittenhouse.  Obviously the bulk of the responsibility for this tragedy is on Kyle himself.  He should pay the full price for what he did.  But we don't do ourselves any favors by denying the existence of contributing factors to what he did.

Slavery is all that schools teach about the history of atrocity against black people in America.  The vast majority of heinous crimes against black people is never taught at all.  Because of this, when the majority of the population see the scars on the surface of the black community, they assume that they are simply "still upset about slavery," when the atrocities have never stopped even to this day.  They attribute the damaged condition of the black community to their inherent inferiority when in reality, they have been sabotaged, undercut, excluded, attacked, and murdered on a level that comes as a shock to any decent human being with a conscience.  

When you don't know these things, it makes it much easier to make black people look like a problems that can only be solved with an AR-15.