Don't people know what a joke is? At the core of many a joke there will be a target, someone the joke is aimed toward. Paul Gascoigne in this instance made a joke about a black man and in the PC Reich this is perceived as a criminal act whence the subsequent investigation.

Is this yet another example of language Nazism and the loss of free speech?

Paul Gascoigne under police investigation after allegedly making a racist joke while on stage | News | The Independent