They're afraid of jeers and insults from antisemites and the Israel-bashing crowd.
Who are, of course, so often one and the same.
Strange, that gutless attitude, is it not?
They have no problem in avowing their homosexuality - they take pride in it.
But they are ashamed to avow their citizenship of their country, the only country in the Middle East which does not persecute gays.
I call that perverse.
As another commentator remarks, it's
"Ironic because, when it comes to what pride is all about, there's no better symbol than Israel. It's the Middle East's one safe nation for LGBT people — a place where Christian, Muslim, and Jewish gay people are able to live with rights and dignity. On the other side of its borders and throughout the rest of the region, homosexuality is illegal and punished with humiliation, imprisonment, and death.
Isn't it also a bit ironic these Israeli marchers would deny their flag in Berlin, of all places? They're going there, after all, as representatives of a country created as a result of Nazi Germany's murder of 6 million Jews in World War II. These people don't have enough pride in themselves, nor enough respect for the dead, to announce themselves as gay Israelis." http://www.advocate.com/Society/Commentary/Michael_Lucas_on_the_Israeli_Flag_at_Gay_Pride/