Heard of this? First time I've come across it. It's basically an inverted Nazi salute that's "Not racist" but of course it completely based around hating / blaming jews.

A great Sky Sports article about Nicolas Anelka doing it after scoring a goal here:
http://news.sky.com/story/1188563/the-truth-behind-footballers-sick-salute

and also on google images, here's some twats doing it by concentration camps and Anne Frank
https://www.google.co.uk/search?q=%22quenelle%22+salute&safe=off&hl=en&authuser=0&source=lnms&tbm=isch&sa=X&ei=bE7FUv3SEMqAhAeav4CADw&ved=0CAcQ_AUoAQ&biw=1031&bih=618

Fucking hell.