Libertarian Socialism is effectively the end game of Communism, from what I understand of Marx's meaning by the eventual "withering away of the state".
Unfortunately, the ethos adherents are typically just a bunch of theory illiterate very onliners who like the idea of not paying taxes and doing whatever they like, but also, trying to still be humanists.
They are skipping all the hard work steps, which involve revolutionary solidarity and action which deliberately dismantles the structures which protect capitalist power. Anarcho-Syndicalists completely ignored that the people who have monopolized capital will fight tooth and nail to maintain and preserve their privileges. They will murder using war and police without remorse.
Libertarian Socialists will try to both-sides the state monopoly on violence. This is a false equivalency logical fallacy. The Capitalist state will do extra-judicial murder all the time in order to protect their hoards. They are anti-human dragons. The Communist state is explicitly pro-human, and uses violence to fight back or to protect and preserve the people's revolution, because without that ever vigilant revolutionary spirit, we will again fall victim to the psychopathic greed of the anti-human Capitalist.
Is violence always bad? Sadly, it is not. Humanity was born out of a violent nature, and was raised amidst it. But humanity will have to fight for justice, and preserve it.