Why Spurs supporters chanting yids devalue sport

I entirely take the point my colleague Andrew Warshaw has made that Spurs fans, "have for years used chants like "yid" and "Yid Army" not as term of abuse but exactly the opposite: as a badge of honour, of identity, of pride, of endearment."

However I disagree with him that the chanting is now acceptable. Don't get me wrong. I am not saying such shouts are racist but they damage sport and drag society back to a less welcome age. But before I proceed further let me explain where I come from.