jomifl, by "but he didn't did he?" are you seriously suggesting that Sir Oswald Mosley did not object to a law forbidding the wearing of political uniforms and requiring police consent for his marches? Why do you think that law, the 1936 Public Order Act, was passed? He was the founder of the British Union of Fascists, later adding "and National Socialists", which is a bit of a clue to his being what we understand as fascist. The fact that the word has been hijacked to apply to any dictator or intending dictator from the extreme left to the extreme right, and to anyone whose authoritarian views people don't agree with, is immaterial. That's just a debasement of the language by certain people, the word being chosen because of its Nazi associations.
Hence the irony in someone using the word fascist in connection with the banning, or direction of, a march (or "charity walk", as it appears Mr Robinson wanted it to be so seen)