It would be foolish to presume that Radical Islamists whom had misused Islam - a religion of peace - would only kill Jews.
They had misused the religion, turned it exclusive, & even encourage the torture & slaughter of ANY Human who is NOT a Muslim, considers such a RIGHT OF Muslims, & had been doing so for the past centuries since Islam was taught. They had even been killing each other fellow Muslims during such times even today, with no signs of abetting....
Thus, how can Humankind CO-EXISTS with such radical Islamists, & worse, even moronic village clerics from far away lands support them, preach to their congregations, to harm & kill innocents, & then even be divinely rewarded?
Islam is a religion of peace, & there are many from both sects - Sunni & Shia - that only sought to live in peace, with others, but sadly, they had done NOTHING to ROOT OUT the Radical Islamists, end the support for them, turn them to the authorities, etc. If such attitudes continue, co-existence will became an existential issue for Humanity to deal with....
When even ONE innocent is killed, it would only invite societal approved REPRISALS in many forms. Disproportionate Force does not apply, as proportionality of force or justice is based upon INTENT rather than weapon used, as even a stone can be a weapon.
Radical Islamists DO NOT act alone. It is an organized force, with CLEAR INTENT, & thus the terrorist organization - everything & everyone in it, WILL BE EXTERMINATED, like pests that they are, before their INTENT can harm more...
They are the few, even if numbered in millions, but Humankind is 7 BILLION strong with history of Humanity that dates back to thousands & thousands of years ago, (long even before there was Islam), whom many only wish to achieve the altruistic ideals of Civilization - peace, love, justice, equality, prosperity, progress & more.