Although religion has often been the cause of fighting between groups, religious groups also promote tolerance. Most religions do try to maintain some kind of positive relations with other religions. We tend to gloss over the things that religions do to support one another.
This is an amazing question. From the point of the view the three major religions in our world, the religious communities should logically be at the forefront of eliminating at the prejudices that their respective communities of faith claim to abhor, such as racism, sexism, and the division of people based on social class.
For example, the New Testament says in Galatians 3:28, "There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus." And the golden rule for the majority of the world is to love neighbor as self.
In light of these points, we could say that there has been some progress. We hear of the reconciliation ministry of Bishop Desmond Tutu in Africa. He really is an amazing man. We also saw the work of Mother Theresa and the work of Martin Luther King Jr. There are also many other unsung people.
However, there is still much work to be done. At least from a general perception level, communities of faith do not do too much when it comes to these division in society.
With that said, we must also make the point that there are legitimate differences of opinions and agreeing to disagree must not be seen as prejudice.
They have a right to end prejudice. Every religion in the world has many traditions and beliefs. People have claim to certain churches, temples, mousques etc. In our world there are many minority religions. In the middle east christianity is pretty much dying while Islam is flourishing. Lower africa and beyond Chrsitianity is booming which Islam is slowly declining. Europe is a secular government that is tolerant of Islam , Christinanity, Bhuddist Etc. which the birth rate for immigrants is higher than natural born citizens. So I predict Europe is slowly becoming a place of no more natural Europeans. Amercia is a list of Religions and we are simply different than Europe because we are a nation no matter what faith that works together. Me i've studied Islam even though I am a devout Christian. I've also studied Judaism. America I see hope in as we are a nation that has been tolerating immigrants since the great depression and beyond. Europe is losing tradition as well as its heritage. I predict the fall of Europe in not too long of a time. Especially with the wars in the middle east. I also predict a war between the East & the West America v.s The empire of the arabia and China. I also see much of Africa becoming Christian predominantly Ethipic or Coptic or Roman Catholic. I also see Northern Africa becoming an Islamic Republic. Right now the breaking up of Sudan is a huge example Northern Sudan is Muslim while southern Sudan is Christian reminds me of Vietnam and Korea. I am a believer of all faiths, but I also see troubles. I think america might be the last tolerant nation in the world. Just see the world as a huge bubble waiting to burst as prophecy foretold.
I would like to mention here only of the believers in Hindu religion. Vedas are the main scripture for the believers of the Hindu religion. There are two parts, though divided in four, in it- Agam and Nigam. 'Agam' means aspiring earthly happiness by means of worshiping various gods and 'Nigam' imparts knowledeg to know the diffeence betwee the ultimate reality and phenemenal. By means of acquiring this knowledge one can feel real happiness and he is hardly worried about prejudices. This is also called 'Gnyana Marg', Gnyana means Knowledge. It teaches about earthly reality and the ultimate one. So the devotees ignore earthly enjoyments but work for the sake of rendering duty sincerely without any aspirations of them.
They believe in good deeds, not in Hell or Heaven but total peace of mind which is attained only when our mind is under control and it feels happy with what one has. Thus he becomes self contended. He is free of any kind of fear, avarice and sadness. He never believes in caste, creed and so on as because the ultimate reality is one. He sees that everything over the earth is only our perception and conception.
He believes in the present world and not a life after death. Srimadbhagavat Geeta is the best scripture for attaining this knowledge.