For people defending Elon Musk by saying that was a Roman Sallute - the Roman Sallute you're talking about was created by the Mussolini regime. Ya know the other big facist regime of WW2, who allied themselves with the Nazis. It was definitely not created in Ancient Rome, & any art you see of it based in Ancient Rome - almost definetly facist propaganda from the 30s/40s.
And as for the 'He was stimming' defence, STFU - as an autistic person it's so fucking offensive that people are saying the most well know facist/racist gesture is just ☆stimming☆ (also that's just not how stimming works)
Good Luck America with the steaming pile of crap that is your President.