WHY, we are doing precisely that : only our approach is perhaps different.
From the Buddha to Gandhi and from Jesus Christ to Leo Tolstoy, universal experience demonstrates that the noblest doctrines of love, compassion and non-violence have never gone beyond replacing one form of exploitation and oppression by another. Of course, this is not to say that conflicts and violence by themselves beget peace. The real thing is that so long as society remains split in mutually antagonistic classes and strata, there can be no final riddance from ill will and bad blood, from torture and revolt, either by preaching peace or by wielding the gun to punish the oppressors. The only solution therefore lies in putting an end to social antagonisms which breed violence and counter-violence in so many forms. And we communists are striving for just that — for a society where classes will be abolished and, on that basis, other social relations (gender, ethnic, etc.) harmonised.
This, however, is not a novel idea “invented” by the brilliant brain of Karl Marx. What he and his friend Engels did was to demonstrate that such a solution, which was objectively impossible earlier, is now possible and historically necessary : that is to say, in capitalism class society has reached its highest, most developed form and is now ripe for a transformation into a classless society. They located in the modern proletariat the real force which can — and owing to its social position, must — lead this transformation; formulated the broad philosophical and theoretical frameworks required for that; and set about organising the working class along these lines. Thus, started the Marxist proletarian project for making this planet a peaceful place to live happily together. But can such epochal change be brought about peacefully?
History knows of no instance where a ruling class rendered superfluous left the stage of its own accord. “A Cromwell guiltless of his country's blood”