I'm a Sanders supporter, and there's quite bit (obviously, alienated from the duopoly fostered by the structure of US government and elections) to the left of the left-most Sanders supporter.
> but there is serious denial about the past 6 months of coordinated violence in major city cores from militant groups that claimed to speak for me.
Since you don't claim to be from either the far-right groups that the many identified violent provocateurs represented, nor from the movement that the protestors represented (which wasn't either “the Left” in general, or Sanders supporters in particular—in fact, being in the overlap of the two groups, I'm very much aware that it's a group that has had a very conflicted relationship with Sanders and even moreso his largely-White and not particularly race conscious base of support), I’m not sure what your basis is for claiming that the supposed coordinated violence, no matter who you attribute it to (there has been considerable disagreement on that) was from people who claim to represent you.