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Correct.

People directly killed billions of others with help of the sword & shield.
Imperialism can only be held indirectly responsible.

But I'm curious, what history books do you want me to read? The communism manifesto? Already read it :)

Communism is already a failed ideology, the human atrocities commited under the red flag of Socialsim are the proof of this ! To deny this is to deny History and even reality ! Why indeed there are still people out there that still think that somehow bending the knee once more to the dictates of Communism is truly beyond me ! They should perhaps go live in North Korea for awhile and live as do the people at the bottom of the feeding pyramid there ! Would they be so keen then of the dictates of Trotsky and Lenin ??