Respectfully, Capitalism kills millions. The United States slaughtered over a million children under age Eight in Iraq. Sanctions are directed at the old, poor, children and vulnerable to attempt to incite a revolution and America has those with anyone who gets on it's wrong side of American Corporations.
Capitalism has by products of poverty, racism, caste, homelessness, and misery because it creates a society of desperation where those with the ability to make money seek to pay the lowest wage possible or create slavery. Those during medieval times worked fewer hours than many employees today do.
You talk about hundreds of millions slaughtered, the Atlantic slave trade dumped millions of African slaves over the sides of ships during the time it was legal. Who knows how many more were buried in unmarked graves after being worked to death.
America leads the world in incarceration. Iran was right to call American with its Fascists Capitalist government the Great satan. The examples Capitalist love to use about potential government policies to help people are dictators like Stalin and Mao. You can have a non Capitalist society without a dictator.
I am working on an article on what to replace it with. Capitalism has had it's time like Feudalism, and Mercantilism. Capitalism ends in Fascism where the state and corporate interest are merged. Prove me wrong.