However, this war has been fought in different ways and in different conditions.

However, this war has been fought in different ways and in different conditions. Those who undertook to campaign against the tyrants and oppressors of their time were hundreds of thousands in number. These great heroes were a source of pride for humanity whereas the tyrants stained the pages of history with their misdeeds. Those heroes came in succession and every one of them inherited this holy war from another.

They have also been some great souls amongst the human beings whose entire lives were spent in waging war against injustice and oppression. The biographies of Abraham, Moses and Jesus consist of war against oppression, usury and injustice. Muhammad's campaign against the polytheists was also in continuation of and complementary to the war waged by Jesus.

He started a great revolutionary movement to uproot injustice and oppression and did not rest till the oppressed were emancipated and their lives took a turn for the better. Cruelty becomes the second nature of some persons. They commit atrocities with perfect ease in the same way in which they perform other natural acts like eating, drinking, walking and breathing.

To this category belong persons like Nero, Changez Khan, European officers of the `Inquisition' during the Middle Ages, and many other kinds and rulers like Hajjaj bin Yusuf, Ziad bin Abih, Obaidullah bin Ziad, Muslim bin Aqba etc. And similarly history tells us about innumerable other persons in whom opposition to injustice was inherent and had become their second nature.

The reason for the tyrants of the past not being ashamed of the atrocities committed by them was that they were not pained by their cruel acts. They did not tyrannize or oppress others with any aim or object. They did so because it had become their habit. Once Hajjaj bin Yusuf was having his meals along with some friends of his. Before him was standing an innocent old man who was trembling with fear. Hajjaj raised his head and looked at the old man.

Then he ordered one of his servants to behead him. The order was complied with immediately and the old man was beheaded. Hajjaj continued to eat as if nothing had happened. He said to his slave loudly: “Bring cold water”. Nero set the city of Rome on fire. While Rome was burning Nero was busy in his merry-makings. The firmness and steadfastness of those who consistently campaigned against injustice and oppression can also be explained in the same way.