I'm not saying that they do not want to send messages to the public (nice moving the goalposts, by the way, first it was "terrorists want to spread hatred" now it's "terrorists want to send messages").
Their religious text tells them to kill people, they have an almost 1,500 year history of barbarically killing people for their faith, their cultures on-the-whole celebrate or condone violence, their prophet and most exalted figure was a barbaric warmonger, and the pious strive to emulate him. Why should it be surprising that this set of ideas then leads to faithful Muslims savagely killing people all over the world?
I'm not even denying that moderate, liberal, secular Islam can exist, I'm just saying that to prevent people from being killed and to keep people safe we need to be honest about what the problems and issues actually are. This Trudeau-esque "if you hate/kill the terrorists they win" mentality needs to end and fast.
You see, you are the perfect example of someone who actually has a very valid point of view and really interesting, but mixes a few things which can causes a bit of agitation in this kind of discussion. The problem is that people misuse terms like "muslim", "terrorist", "arab" etc... To begin, I think that our three monotheist religions are basically the same (myth of Abraham), they just don't recognize the same prophets. But the thing is, even if they're not on the same wavelength about who is the principal prophet, they still recognize the others religion's prophets (Example : Jesus is a very important prophet in Islam, and he has exactly the same functions as his christian equivalent). The three religions has the same structure, pretty much the same belifs and all.
So why do we see a lot of muslim terrorists these days, and less christian or jew ? And why now ? That's where I join you, to me it's more of a socio-cultural problem. This kind of things don't happen in every muslim countries, mainly muslim arab countries. Why that ? Most arab countries have faced wars, revolutions, oppression these last years, which make them really easy targets for terrorist organization. So situation of the country is an important factor in appearance of terrorism. I'm from Senegal, a country mostly muslim, with a minority of christians, but that kind of shit never happened in Senegal. I even have a church in fornt of my house, and my mother used to go to church during holidays. Wearing a veil is not mandatory either. So culturally speaking, we are very different from arab countries, because we have a different culture and a different history. For example, we don't use burqa. It's not even in the Quaran. The only thing about that in the Quaran is something about hair, knees and elbows that has to be covered. But even in the Bible you can find this passage about women, that's why nuns are dressed the way they are. (echoing with wha I was saying earier : it's the same)
IMHO there is a problem with Islam, but the problem is not that Islam is too violent or anything, the problem is that real muslims need to gather and show people that they're not terrorists. Yes, there are violent things in Islam, just like in Christianity or Judaism. But this has nothing to do with terrorism. Quaran does not say "just go kill some random people", because that's what terrorism is, people randomly killing in the name of their god.
Religion is supposed to be a way of life, not a way of death, and terrorists are now using the false pretext of honoring the name of their god by slauthering people when in their sacred text it's written that killing one person is like killing the whole humanity. Terrorists just use religion as a vector because it's easier. You can find whatever you want in the sacred books, so if you're smart enough, you can brainwash weak minded people and use them.