It could be considered anti-Semitic if we only condemn Israel for occupying conquered territory when we give other countries a pass for doing the same thing. After all, the borders of many, if not most, countries around the world were frequently the result of wars and expansionism at one time or another.

Countries on the losing side of wars frequently lose territory to the winner. For example, how were the borders of Belgium determined? How about the rest of Europe, Asia, etc.? The US got to be the size it is partly by expansion, e.g. the Louisiana Purchase, and partly by war, e.g. the Mexican-American War. Despite the claims of a few, we aren't going to give back most of the western states because we took that land from Mexico over 150 years ago. Why should Israel be the exception? How many European countries were forced to give back land they won in a war?