Paris Shootings and Explosions Kill Over 100, Police Say

We know exactly who they are: islamists. We have video recordings where you can hear them yelling "allahu Akbar" while shooting.

42% of young Muslims in France believe suicide bombings are justified (35% overall).

http://www.pewresearch.org/files/old-assets/pdf/muslim-ameri...

42% is appalling, but so what? What's your conclusion? (Recall that a majority of Americans have no problem with dropping bombs on foreign civilians.)

I agree they most likely were Islamist, although incidentally saying Allahu Akbar is not a very precise way of identifying an Islamist: https://en.wikipedia.org/wiki/Takbir

To quote from the page: 'In videos released during the course of the Syrian Civil War, Free Syrian Army, Al-Nusra Front, other rebel and Islamist groups and ISIL are heard shouting "Takbir" and "Allahu Akbar"'

Some of those are Islamist groups, some are not.

Also, we don't know if the perpetrators were French or not, so what 42% of young French Muslims believe is not relevant at this point. Even if it was relevant, it would be hard to draw any conclusions from it. In the same link you provide, it seems that over 75% of French Muslims are concerned about the rise of Islamic Extremism.

>a majority of Americans have no problem with dropping bombs on foreign civilian //

What's your reference here? I'd be quite shocked if people "had no problem" with such actions; "felt they were justified" is entirely believable however.

42% in a western non-islamic country is huge. My conclusion is that Islam is not compatible with the western cultures, with things like freedom of speech, freedom of religion, personal freedoms, and it's a huge mistake for Europe to allow so many of them in. You don't have to believe me, listen to the muslims themselves talk about it:

https://www.youtube.com/watch?v=bV710c1dgpU&t=138s

Have you noticed that Muslims in e.g. the US and Germany are by and large less radical than the broader population there? Islam doesn't seem to be particularly incompatible with Western culture, rather it seems to be incompatible with France. And I doubt it's something about French culture in particular either - if I was looking for what the difference is the first thing I'd do is look at French domestic policy and whether any of that stuff disproportionately affects immigrants or Muslims.