Once they blur all the distinctions, they can do anything, and justify it in their minds. And that is why the Left is always so violent when they are out of power, and why they control or try to control everything, when they are in power.
The problem with all Leftist arguments and debates on any position is that they completely blur any distinction between lawful and lawless, in an effort to confuse, distort, and force their position that since everyone is lawless in some way, no one is, and individualism still means everyone is the responsibility of everyone else, from each according to their wealth, to each according to their fair share.
Take the Second Amendment. There is no difference to the Leftist between a law abiding gun owner, and a mass murderer, because all gun owners are potentially mass murderers, they think, which is how they rationalize banning all guns and gun ownership ever incrementally.