Yes, so in our system basically all religions must conform to the law, no matter what each religion might say
Pretty much, yes. I am very much a 'fan' of the separation of church and state; the state should stay OUT of religious beliefs and practices, and there should be no state religion. Freedom of religion is, in the US constitution, not only the FIRST right mentioned, it's the only one mentioned twice. THEN comes freedom of speech and assembly. These rights mean nothing if the people we don't like also can't worship, speak and assemble freely.
On the other hand, religious people need to obey secular law.
Either that, attempt to change the law if it is discriminatory against them specifically, or unfair, or be willing to face the consequences....including jail time and/or other punishment. Terrorism, however, is not one of the appropriate choices.
For instance, a law that forces a member of a religious community to wear a big yellow star on their sleeves would be a law that ALL people should oppose, as would a law that forbade a woman from wearing a hijab or burka if she wanted to.
Or...a law stating that polygamy is illegal...BECAUSE a certain group practices it. (and no, I am not, and never have been, a polygamist, just for the sake of information).