Keep your panic under control!
Despite the rumors that tricked more than half the state governors in the USA into enacting racist anti-Syrian policies, there is no evidence that the Paris attackers came from outside the EU.
One attacker had a seemingly fake Syrian passport on his body, which is consistent with the idea that Daesh want to provoke racist retaliation against Muslims around the world, to convince moderate Muslims that there can be no peaceful co-existence with secular Western states. The tactic has been effective: the terrorists used it to recruit the majority of US state governors to support Daesh's goals.
Don't use the term "ISIS":
Unfortunately, women named Isis, no matter what their personal attributes, now have to put up with associations with this group - despite having had the name much longer, and doing many good things in that name.
Like Obama and others, I also don't like to use the term 'radical Muslim' or its variants. Conservatives deride others for not using the term, saying that liberals lack the courage to properly label the group, but the religious label gives the group credibility and insults the faith of ordinary Muslims. If you use the term 'radical Muslim', the terrorists win. The term 'Daesh' is better.
This is exactly why we MUST avoid using the term 'radical Islamist'. Marco Rubio is dumber than a box of rocks, as proven by this exchange:
Rubio argues that to the extent we're trying to avoid alienating the bulk of the world's 1.3 billion Muslims, this larger group is comparable to Nazi party members who simply hadn't committed atrocities with their own hands. As this crowd is fond of saying, words have meaning and they have consequences. And the clear import of Rubio's Nazi analogy is that we are in fact at war with Islam itself but that there are many Muslims who haven't themselves committed acts of terrorism. Read the actual words. That's the only reasonable interpretation of the analogy as he states it.