I want to know if there is any city/country or culture that has banned any manga/anime because it opposes their beliefs?
I have read articles that say Pokemon is against Christianity; however, are there any more?
Ha ha ha ha ha OH YES.
China: Death Note, Code Geass (temporarily), Blood-C, Psycho-Pass, Attack on Titan, Deadman Wonderland and more and anything with yaoi content
France: Temporarily banned Kinnikuman for having a heroic character that wore a swastika
Iran: Basically everything is banned unless the Ministry of Islamic Culture approves it (unlikely to happen with anime/manga)
Japan has even banned a few: "Barefoot Gen" and "Midori (Shoujo Tsubaki)"
New Zealand: Highschool DxD and Puni Puni Poemy were banned for 'objectionable material' (To be fair, they also banned Power Rangers, because parents complained that their kids got hurt trying to imitate the show)
Singapore: Anything with yaoi content
And that's just a sampling....
First of all, I like to state I find your claim
I know of Christianity and Pokémon. fairly weird. All though I know in some streams of Christianity it is frowned upon (speaking as somebody with a religious up-bring) it never has been out righteously banned for religious reasons, and most likely not by a country/culture as a whole.
Most series don't get banned for opposing religious beliefs. They don't even get aired at all! An example of this would be Iran.
Iran first gives a thorough screening to everything that is aired on television by the Ministry of Islamic Culture. All though they do not allow most anime content, it is not a
ban (the act of prohibiting by law), but
censorship (the practice of officially examining books, movies, etc., and suppressing unacceptable parts), which sometimes is the series as a whole.
Any form of media in Iran needs the permission of the Ministry of Islamic Culture for distribution, which sets an arbitrary array of rules subject to change at any time by the government. These rules include any form of pornography or sexual imagery (particularly centered on the display of the female form, which in the Islam religion, is taboo), political material not in agreement with the government's goals, and any form of communication criticizing Islam. These restrictions are often circumvented by physical and internet piracy, use of satellite dishes and illegal used book markets. Source - TvTropes
All though there are plenty of censors due to religious reasons. I were unable to find any that out righteously banned a series due to religions reasons.