Musk, arguably Trump’s most influential ally and a confidante, ended his speech at one of Monday’s inaugural celebrations by twice using a one-armed gesture that strongly resembled the Roman salute adopted by the Nazis and used regularly by white nationalist groups.

The singer, who uses they/them pronouns, lashed out online after one follower said she planned to cover up her tattoo of Grimes in the outrage, which Tesla mogul Musk, 53, dismissed as “dirty tricks” from haters.