Its not false. I see plenty of calls to violence from the left on reddit. Some of it is overt, like calling for summary execution of conservatives and religious officials in the same vein as in many communist revolts. Much of the time it's slightly more subtle, like calling for violence against "Nazis" while simultaneously calling large segments of their political opponents "Nazis".
Just browse a left leaning subreddit like LateStageCapitalism or even just /r/politics and you'll see calls to violence from the left.
