Ask yourself what ISIS hopes to accomplish by carrying out attacks like this. To me it seems clear that they are trying to prevent assimilation of Muslims in other countries by driving a wedge between those countries' native and Muslim populations. The more that Muslims are ostracized, isolated, and oppressed in other societies, the easier they are to radicalize and recruit for ISIS's caliphate fever-dream. That's why, if you respond to these attacks by further isolating Muslims from society, you are playing right into the hands of radicals.
I disagree.Your argument is a standard one that ignores the mindset and nuances of Islamic jihadist theology. Not saying it's entirely wrong but it's not fully informed either.
In Islam, jihad in terms of violence is permitted provided it brings honor and advancement to Islam. Lying and all sorts of normally un-Islamic things are also, including pretending to not be a Muslim or a jihadist, provided once again it's in the cause of Islam.
You want to know why ISIS started putting so many atrocities on youtube or one reason why? And why they always try to come up with something even more perverse and outrageous? Has to do with our response. When Al Qaeda bombed us, we responded with how wonderful Islam is. When our ambassador was murdered, the president of the United States went before the UN to proclaim the future does not belong to those that slander the prophet of Islam. In other words, from their perspective, he said the future belongs to Islam.
So with each new atrocity, the West has doubled down on promoting Islam. For the jihadists then, it's working. Islam is being honored and respected by the leaders of the non-Muslim west. We are teaching Islam as something good in our schools. We are condemning critics of Islam as racists or bigots. THAT'S WHAT THEY WANT.
And that's what they are getting. They are winning the jihad. The only way to get them to stop is to do the opposite of what we've been doing and turn their actions as a means to demean and disrespect Islam, to bring Islam into disrepute, to call it a rape religion and shame it. The other thing is to defeat them militarily. But just as important as stomping them is to bring Islam into shame, something akin to being a Nazi.
If that is what they produce, they will quit because in Islam, jihad can't be waged without the prospect of advancing Islam. In Islam, you have to peaceable unless you can win by being violent and winning is advancing Islam. There is no real morality here except the supremacy of Islam.
So the idea they want us to play into their hands by slamming Islam and so radicalizing others is largely incorrect, imho.