My grandfathers were either Bolivian immigrants or Arkansas sharecroppers that often worked alongside and lived in same conditions as black people. They had little to do with the systemic racism of black people in the United States
The fact that you know their background means so Much ... and
you may not understand in your life time how fortunate you and them were.
They worked along side black people........ but at any given time could your grandfather get his wife pregnant and have his wife hung from a tree and the baby cut out of her stomach and stomped on in front of the other Bolivian people just to mentally control them?
Was their history damn near erased .........or did they have their language , religion, culture, and ways stolen and replaced with the culture of demons? ? ?
I'm sure they had very little to do with white supremacy and systemic racism ----- But for the fact that you even understand the word systematic, I'm sure you can appreciate that over the last 100 years they have benefited from the system as all so called white people have in this nation. (and at the very least their future generations weren't the perpetual victims of it)
So you can create a screenname lightheartedly like VegasCAC because there is no words that are offensive (in Americakka) to any white ethnic group, including so called Bolivians. There may be names you don't like-- but non are backed by racial policies, a history of mass governmental violence, oppression, media stigmas, the justice system, etc...
^ and this is not even the top of the iceburb of the differences between your grandfathers and the black people who
they chose to Come here and work next to.