How does an antisemite deny they are an antisemite?
Here is one way:
Greta Berlin’s t-shirt reads “If you have not been called an Anti-Semite, you are not working hard enough for justice in Palestine.”
I would suggest she instead wears one with the words “If you have not been called an Anti-Semite, you might not be tweeting links to known antisemites and Nazi propaganda films.”
Just a suggestion.
Incidentally, the t-shirt has been described as genius by one Gilad Atzmon (http://www.gilad.co.uk/writings/genius-t-shirt-truth-shirt.html).