After 370a, Christianity became the official religion of the Roman Empire. Christians faced the choice of either fighting or allowing the empire to be overrun by invaders
Amos: 'Take away from me the noise of your songs; I will not listen to the melody of your harps. But let justice roll down like waters, and righteousness like an never-flowing stream.'
Injustice can cause people to lose their sense of self-worth and self-respect. It can deny people dignity because they have been treated unfairly, e.g. black people suffered during the apartheid era in South Africa
Although Jesus taught that anger should be avoided whenever possible, he showed righteous anger when he drove the sellers from the Temple as they had turned it into a market place (John 2:13-17)
Many Christians believe that righteous anger is acceptable because it can be controlled and channelled into positive action, which can improve a situation
Contrasting views on violent protest as a response to injustice
Most Christians are against violent protest
Some people will support violent protest in some circumstances providing no people are harmed
Some people will join others in taking part in protests which they accept may lead to violence, if they believe that it is the only way to get the government to take notice and end injustice
There are many examples of violence and war in the Old Testament, as the Israelites fought to conquer and defend the land they believed God had promised them
Jesus: 'You have heard that it was said to those of ancient times, 'You shall not murder; and 'whoever murders shall be liable to judgement. But I say to you that if you are angry with a brother or sister, you will be liable to judgement" (Matthew 5:21-22 (NRSV))'
The concept of a holy war does not feature in current Christian belief - Christians are more likely to use the power of argument rather than military strength
The Catholic Church teaches that all believers should be involved in peacemaking and conflict resolution (creating peace where there have been disputes and war)
Two organisations, Pax Christi and the Justice and Peace Commission, work with the Catholic Church to help bring mutual respect, justice, reconciliation and peace