Elon Musk gave what appeared to be Nazi salutes at a rally held at Capitol One Arena on Monday after the inauguration of Donald Trump in Washington, D.C. And whatever Musk’s intention with the salutes, Americans on social media are extremely uncomfortable as they debate what it could mean for the future of the country. “This one really mattered. And I just want to say thank you for making it happen,” Musk said about Trump’s re-election to a crowd of supporters. The billionaire placed his right hand to his chest before forcefully extending his arm upward with his fingers fully...