I have no desire to argue, but you have already made your mind up and as most of us do are now just operating under confirmation bias.
I'll ask two questions though. If I, a white middle aged man call another white middle aged man a gammon is that racist? Because predominantly, although not Exclusively it's a term used by people of white skin towards others of white skin.
Secondly, do you really not see any shred of racism or xenophobia in the immigration poster below? I'll let you give Farage a pass on not realising the approximation to the Nazi Jewish one if you like but based purely on the image I'm struggling to see how anyone couldn't objectively see it as anything else.