The name Khaibar mentioned in battle cry was the last Jewish village defeated by Muhammad's army in 628. The battle marked the end of Jewish presence in Arabia.
There are Muslims who see that as a precursor for future wars against Jews. At gatherings and rallies of extremists, this chant is often heard as a threat to Jews to expect to be defeated and killed again by Muslims.
The video was aired on Al-Jazeera TV in 2010.