On the one hand you have a culture which espouses freedom. Perhaps not every member would allow such freedom if given an opportunity to limit it. Nevertheless, the freedoms are available by law.
On the other hand you have an archaic culture, steeped in religious dogma, and ruled by force.
The archaic culture, by it’s nature, cannot permit freedom of thought, not even by distant cultures unrelated to it. It believes the religion by which it lives is the only way, and feels compelled to force all other humans to abide by it.
So, you have two groups, one for life, one, evidently opposed to it.
Conflict is inevitable.
The annihilation of one group is inevitable.
Which shall it be?