That wasn't some random 4chan post it was something planned by a group of 4chan users that made it into an "operation" to push this to go after liberals and the media, and why would they he doing that? Oh because it was started by actual Nazis on 4chan.
Again this is just Nazis trying to use left wing and media overreaction to cover up their Nazi shit, they like trying to make us look like we're jumping at shadows while they operate with impunity.