To smash private property, you need a state. Capitalism, on the other hand, exists independent of the state. Given what happened in Spain, where the first thing the so-called "anarchists" did was set up a police force with exclusive privileges to use violence, nobody buys the socialist "anarchist" line anymore.

Steve Kangas used to spread lies and disinformation on Usenet until he traveled to Pittsburgh one day and shot himself in a restroom outside the office of Richard Mellon Scaife.

As for monopolies, one of the poster children for evil monopolies was John D. Rockefeller's Standard Oil, whose great crime against humanity was slashing the price of refined petrol due to technological innovation. Standard Oil never had monopoly pricing power.