Sovereign citizens have killed at least two police officers per year for the last five years...not a single one of those guys is a "leftist".
Antifa's death toll in that same period: 0 (unless you count the ones that got THEMSELVES killed in the process, lol)
Blame doesn't fix anything, it only serves our own egos. It's hard for me to see this as a strictly "left-wing" creation, considering the mainstream right has been floating "second amendment remedies" publicly (and loudly) for about a decade now.
Ever hear of those who call themselves members of Moorish Science?
To say that not a single slobbering ****izen is a leftist is flat wrong, not by a longshot, and the abundant vids of them demonstrate that quite easily.
The vids of ANTIFA losers stabbing and hitting other people with bike locks are also out there, at least for those willing to see them.