Why communists hated capitalism?

In the short preamble to The Communist Manifesto, one of history’s most widely read texts, you can tell that the authors have had it, right up to their beards. Karl Marx and Friedrich Engels were clearly sick of explaining that communism was not a synonym for evil or naivety, but a historical stage vital to the flourishing of all. In 1848, they demanded an immediate end to fearful European talk about the “specter” of communism. But, more than a century and a half later, the jittery gossip about communism continues.

Explanation:

letter a is the answer