Becky calls it "eminent domain" and thinks that makes it all OK.

Eminent domain makes it legal according to the Israeli Supreme Court. the suicide bomb attacks on Israeli civilians make it neccessary to save lives. Israel is not building the fence "'cuz they don't like some peoples political beliefs". They have tried to achieve peace through negotiations, but in every case, the Palestinians broke each agreement and the attacks continued.

The laws of emminent domain allow the government to take over lands of individuals for the greater good of the country. The fence is saving Palestinian lives too! And the IDF has dismantled many of the checkpoints because of it as well.