Class struggle(in Marxist ideology) the conflict of interests between the workers and the ruling class in a capitalist society, regarded as inevitably violent.
"Oh [Muslim] brothers, the nation that excels in the death industry, and knows how to die a noble [death], Allah grants it a precious life in this world and eternal bliss in the Afterlife. The only weakness that shall humiliate us is the love of this world and hating death. Therefore we have prepared your souls for great action, strive for death - and life will be given to you."-- From Palwatch translation of The Muslim Brotherhood handbook.