Religions are tools to control the masses and yes the rich use them for this purpose. Thus it should eventually be dismantled if possible, or restrained at least. Because when religious institutions have too much power and influence we can agree that nothing good happens out of it.

Even though it’s legit against the Muslim religion to kill other Muslims.

Not really. Islam has a lot of denominations and interpretations of the quran. ISIS justify killing of other muslims as that these muslims are “kuffar” because they have not actively implemented the teachings of Allah and are silent and complicit in not implementing sharia law.

Some denominations would say that those muslim people are ignorant and so there’s no blame to be put on them. ISIS’s sees that ignorance is not an execuse because in their opinion it is every muslim’s duty to learn their religion, and that if they did, they’d see that they must implement sharia law.

As an ex-muslim. I’d like to correct you that everything that ISIS did is mentioned in Quran and is actually a valid interpretation. In fact, a lot of it is mentioned directly by hadith and verses in the quran. Hence why you will never hear any religious institution calling them “kuffar” or people who have strayed and adopted a false supremacist view. They just really can’t do that because everything ISIS did can, and is justified by the quran and hadith.

However, that is NOT to be taken in an islamaphobic way. The majority of the muslim population have no idea about this, as was I when I was still muslim. Simply because we don’t get taught in schools about it. Islam is a cancer, it has the potential to be used to justify horrible atrocities because the quran and hadith contain so much shit like this. Just like any religion really, but it also happens to be overrun by extremists who spread their extremist views.