In this case the man appears to launch at a woman who did not make a racist comment. He assumed that she was racist and went off on one. Maybe she is and showed her true colour, maybe she was scared and lashed out, who knows? Either way, what he did was suppose that a white woman was protesting that he, as a black person, had touched her.
Black, green or pink polka dotted, I don't like anyone barging into me and giving me hip for it, and I do yell 'oi, watch it' when people do (regardless if gender or skin colour).
I call racism (and sexism) when I see it, but this incident didn't appear to be so - initially. It descended into bollocks when the bloke decided not to apologise or even smile at the woman he walked into, but get arsey with her.