Some religions forbid members from participating in politics, voting, joining the military
Some forbid members from dancing or singing or drinking or wearing makeup or seeing movies.
The following religions follow certain rules others don't vis a vis voting.
Amish
Anabaptist
Hutterines
Mennonites
Dunkwards
Moravians
Separatists
Congregationalists
So you look down on those who follow the tenets of their religion because your don't agree with them?
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Not agreeing with a person’s religious beliefs is not a good reason to look down on the person.
I think it’s okay to look down upon beliefs [not persons] if you have good reason for doing so. For example, you might have reasons for not liking a belief that forbids blood transfusion or organ transplant or abortion or questioning religious leaders or investigating interpretations. But you should open your reasons to challenge, because they could be weak.
If you look in your scripture or guide book you might find the equivalent of HQ HQ 49:11 which says:
"O you who believe! No group of men shall look down upon another group of men: It may well be that they [those they look down upon] are better than them; and neither shall one group of women do that to another: It may well be that they [those they look down upon] are better than them. And neither shall you defame one another, nor insult one another by using [undesirable] nicknames/labels: Evil is all [unfounded] accusation of iniquity after [one has been ennobled by] faith; and they who [become guilty thereof and] do not acknowledge it as wrong and cease - it is they who are the oppressors"