Billionaire's estranged daughter has used rival social media platforms to attack Trump's anti-transgender executive order, and her dad's salute.

Elon Musk appeared to make a fascist gesture during Donald Trump's inauguration, performing what looked almost exactly like a Nazi salute.

Social media only had one question to ask after Elon Musk hit the stage at the Capitol One Arena in Washington D.C. Monday: What the hell was that salute? While celebrating President Donald Trump’s inauguration at a post-ceremony rally,