Then you're racist. :eusa_naug
How is "Sheikhs" a racial term when they are Sheikhs? If I were you then I would read upon what a Sheikh is. They are not called "Ackmed", they are Sheikhs. Here's a bit of light reading you can do.
http://en.wikipedia.org/wiki/Sheikh
You're dragging this into a PC brigrade debate which I'll happily employ because sooner or later I'll lose you.
TV comedians don't use a name as a racial term. You however said something along the lines of "Now City and the Ackmeds are around". The plural you used is significant. It indicated that you labeled all the Sheikhs "Ackmed" hence the racial slur.
If you were in the away end near a steward singing "You're owned by the Taliban/Ackmeds" you would be warned for racial slur. If you continued you would be facing an on the spot fine, a ban from COMS and maybe even further action from the police.