"With so many Africans in Greece, at least the mosquitoes of West Nile will eat homemade food!"
Could someone explain to me how that's racist? It may be in bad taste, but I don't actually see a racist quality in it. There's a large influx of Africans in Greece lately; there's also concern because West Nile mosquitos (which carry more dangerous diseases than European ones) have been appearing all over Europe lately. Both originate in Africa. Saying the one biting the other is "homemade food" isn't racist; it's a commentary on immigration policies. It's not talking about people who immigrated before (I can see how calling 2nd or 3rd generation immigrants still "African" would be racist), it's not saying they're to blame for it, it's not saying....well, anything negative about African immigrants.
Granted, she's a known right-winger; it's the kind of joke you might not want to make if you're representing your country in the Olympics. But...as far as I can tell...It's not technically racist. Or even all that insulting. It can be seen as (and was meant as) a commentary saying there are too many African immigrants in Greece...which may or may not be the case, but is still a valid political opinion.