And the phrase “bless you” was created with the intent to banish demons out of your nose, but we still say it when you sneeze.

Bad example. The intent was good and it remains good.

“From the river to the sea, Palestine will be free”, is what they chant. Calling that genocidal is Orwellian, mate. Get a grip.

Many do not. Many drop the second part entirely. For example, the t-shirt on the girl in this very video that we are discussing. Either way, adding a nice phrase to the end of a genocidal phrase doesn't make the genocide part less bad.