I doubt these stars know the difference between the USA and CSA.
If they know the difference, someone would have had to told them. Who would have done that and where? In public schools?
That's why I conclude they don't know the difference.
“So, these mensas are kneeling in protest against the USA (which defeated the CSA in a war) because someone acknowledged the CSA (the defeated foe that no longer exists?).”
Of course Lincoln himself said that the CSA never existed. He refused to meet with delegations from a government that he said didn’t exist.
He called up the Union army to put down rebellious fellow Americans who were obstructing Federal law and seizing government property.