There is debate about what gesture the tech billionaire meant to make at the Capital arena on Monday. Here's what people are saying.

Yolanda Díaz, the minister of labor and social economy from the left-wing Sumar party, said: “Last night, the whole planet could see Elon Musk emulating the Nazi salute in the context of Donald Trump’s inauguration. It has been a very harsh image that has made me make a decision that I have been meditating on for several months.”