“I've never seen so many people simultaneously reach into their bags and pockets looking for tissues and Purel. Within about two minutes, all the Nazi symbolism was gone.
“Nazi symbolism. On a public train. In New York City. In 2017.
“‘I guess this is Trump's America,’ said one passenger. No sir, it's not. Not tonight and not ever. Not as long as stubborn New Yorkers have anything to say about it.”
Mr Locke’s account of the incident, along with the photos he took, has been shared on social media over 150,000 times in just 12 hours. The overwhelming majority of comments in response to the post have been positive.