I've never once heard a 'leftist' advocate for the murder of men, whites, straight people, conservatives, or rural dwellers (although, to be fair, occasionally the police). However, growing up and still when I visit home, I regularly hear how black people, queer people, and just liberals in general, aren't worthy of being left alive. These sides are not equivalent, no matter how desperately you want them to be.
Also, my induction into these liberal circles went so far as "you want people to be treated equally? cool.". I didn't have to hand in my cis-white-man card and tattoo an anarchy symbol. In fact, we regularly talk about all sorts of controversial subjects. My friends often enjoy hearing what it was like to grow up in the world of pocket knives and bar fights. I take my communist friends out to shoot guns. Ask me how many of my rural friends have ever asked to experience life among the queers?
You're comparing a rose bush with thorns to a semi-automatic rifle in terms of aggression towards the other party.