The main danger is that those extremists bring about mass hysteria and populist politicians. If humans fall for fear & propaganda and start hating other groups because of a few dangerous indifividuals, then yes we could have a big war, or civil wars, loss of liberties, and camps.
You can say the same thing to all those who are interested in joining or supporting terrorist groups. They are the first ones in that path to potential conflict who are falling into any sort of fear and propaganda.
What you said sounds like you are ready to put the blame mainly on "our" side rather than on terrorists if something worse than what has happened happens.
Sometimes fear is very healthy and even needed. Fear is an important emotion. Without that we wouldn't have evolved the way we have.
I often feel though that whenever a terrorist attack happens or information like what I just gave is shared and people counter it with their "don't give in to fear" type of one-liners, it's almost as if they are the ones who are giving in to fear. They fear these populist politicians and "right wing" people so much that they are ready to become sort of apologists to terrorists.
Why are the people who are afraid of terrorists the only ones who should not give in to fear? The terrorists themselves do that all the time. And others are afraid that there are nazis everywhere.
At first people claimed that there are no terrorists coming along with the refugees. Then they claimed we know every refugee that comes in, that we know their identity. Then they said nothing will happen in Europe. Then they said nothing will happen in Finland. And if you say otherwise you are either a racist or a fearmongerer, and part of the real danger.
Those were the exact claims that were said in Finland.
And now we've seen the first attack in Finland which was among one of many that have happened in Europe. And now the officials say that there actually are refugees we have no idea who they are, and often we have no idea
where they are, because they have no IDs and they go underground. And now even the terrorist researcher who claimed in 2015 that there are absolutely no signs of any terrorist coming among the refugees has said after the attack in Finland that no-one can say this was a surprise and we know the attacker was an asylum seeker.
So basically the people who were afraid something like that could happen even in Finland were right all along but they were shut down by people who called them racists and fearmongerers. And it seems the same circle goes on and on.
I mean, there has to be some space in between "deport every single refugee" and "nothing is wrong with the refugee system." It's not as if you have to be one side or another. It's not as if criticizing the system makes you automatically a nazi or a refugee hater.
I would even say that the rise of populist politicians hasn't happened only because people are afraid, but also because of people who dismiss their concerns and at worst even lie to hold on to their political beliefs.
By the way, how should the Palestinians react? Which side should now be the ones who should not give in to fear? Should the Israelis not be afraid of the possible Palestinian attacks, should the Palestinians not be afraid of Israel? Should the Swedish Jews not be afraid of those who tried to burn the Swedish synagogue? Should those who tried to burn the Swedish synagogue not be afraid of Jerusalem being Israel's capital? Who are the ones whose fear is irrational?
I mean, fear goes in many directions and it's frustrating to try to understand the situation when people seem to claim fear is the problem and somehow not being afraid would be the key to solving the problem.
I don't mean any ill will towards you with this gigantic reply, but I just would've wished the reply would've been more about what this means for the terrorists instead of replying with something that tries to shift the responsibility to everyone else than the terrorists.