I think most countries--including the US--are largely anti-Semitic and anti-Israel.
In defense of one Greek though, my girlfriend's grandmother is Greek. She married into a Jewish family and has been nothing but nice to me and my girlfriend (we're both Jewish).
Which proves the point that in every nation or religion there are good people and bad people. Fact is, each of us has good and bad within ourselves.
That being said, over time and in general Greece has not been the friendliest country, nor Greeks the friendliest people, toward Jews and either the ancient or modern nation of Israel. The story of Chanukah is of Jewish rebels in Greek-occupied Israel fighting for their independence against a ruler who had pigs sacrificed in the Holy of Holies of the Temple. That was roughly 2,170 years ago, so I don't pin that on anyone or any government operating today, but it is part of an historical pattern of behavior (albeit not so extreme at all times). Balancing that off is the behavior of Alexander the Great, who was extremely friendly toward Jews and respectful of our religious practices. To this very day, many Jewish boys are named Alexander for this reason.
The real bottom line here - IMHO - is that the present government of Greece is not at all friendly toward Israel, and its call for restraint on both sides does a serious disservice to the victim in this situation, Israel.