My question was not limited to the last comment, but what we are discussing along this thread. Please, answer this question: What we have been discussing during these days?
We have among other things discussed, whether Islamic scripture/teachings is a relevnat factor in islamistic terrorism.
And we have discussed, if and how it would be ok to voice such criticism against Islam (which on should't as i understood you).
And now i tried to get an answer from you, what the police might or might not do in case some religious teachings are a relevant factor.
That are different questions and the answer of one of the questions does not determine the answer to another one.
You continue with your confuse use of “Muslim” that allows you playing with words.
You are the confused one. "Muslim" denotes some human beings holding certain ideas dear, "Islam" denotes these ideas.
In my mind an attack on some ideas i hold dear is NOT an attack on me (which is probably to the better; otherwise i would have quite some beef with a lot of people). And i expect the same from any adult.
But i notice, that this is apparently too much to ask of some.
And the main difference between us, which seems impossible to be bridged.
You have not precised what do you intend to say with “observation”, therefore I can not discuss if this is an attack. But I am sure that nobody feels well if the police consider you a suspect of terrorism ony because of the colour of your skin or your belief in the Paradise.
You could have said, if there are any things not an attack that the police might do.
But to help you:
Sending once a month an arabic (or whatever language is most useful) speaking undercover cop to the mosque to listen, whether any of the known problematic teachings are preached or talked about and whether problematic material is distributed/sold there; adjusting the frequency depending on the results (e.g. if several times in a row the cop finds nothing problematic, frequency is reduced or even the center is not checked upon anymore).
Note that such a police action does not treat anyone as a suspect; it treats effectively religious teachings as suspicious, which one could argue to be justified, as some religious teachings where incitement to murder (in the scenario described).
And treating color of skin issues exactly like dislike of some beleive is simply beyond the pale of any reasonable legal analysis.
Your personal attack —was it personal?— would offend Marxist Communists. In any case, in order to proselitize somo of them I find it a little stupid — the idea, not you

—. It would be better to argue without insults. The insult usually reveals a lack of security.
Which is mine to decide, whether i think the approach is useful or not. But an attack upon Marx is not a personal attack upon anyone holding Marx dear (which socialists also do). And it has nothing to with color of skin as you implied above.
Are you telling the story of a film? No; your screenplay is not similar to a real case of terrorism. It is a Hollywood-like simplification. Torturers and executioners are not so nice in reality as in films. A police system where the torturers make law is not beautiful. I have a first-hand experience of that.
You continue to defend bad means in the name of good ends. Your screenplay is a classic. This is the argument of any totalitarian system and police regimes where the civil rights are wet paper. They have a supreme Good, they don’t like the torture, the Gulag, the extra-legal murder, but… Unfortunately it is defended by some “democrats” as Jean-Marie Le Pen or Donald Trump. Legitimacy of torture would involve the entire society in a process of deterioration with general consequences. Democracy cannot be defended by antidemocratic means. The empire of Law cannot be defended by the fall of Law. Have you heard about a certain Senator McCarthy? The case of the President of the Philippines is a paradigmatic one and it is worrying that you don’t want to speak of it.
Ah, ok.
That explains a lot.
What i am supposed to say about Duterte? That he is guilty of murder for all i know? That is pretty obvious, but for you:
For all i know, Duterte is guilty of murder.