Just like the far left drones would not condemn far left terrorism..
Give me an example of far left terrorism that's happened in the past 3 years.
The Bernie Sanders supporter who tried to murder the entire Republican baseball team.....the Bernie sanders supporter who stabbed two men to death in Seattle....the black lives sympathizer who murdered Dallas police officers....the left winger from Britain who tried to assassinate Trump at his rally......bob creamer and scot rival who were paid by the DEmocrat national Committee to incite violence at Trump rallies......the antifa fascists who stopped conservatives from speaking on college campuses....
Is that enough?
Bernie Sanders does not promote hate or violence, unlike white supremacists.
BLM is an awful group but they condemned the Dallas cop-killer almost immediately.
The would-be assassin didn't have a group. He just hated Trump, as far as I know.
The rabble rousers were not terrorists. Just dickheads and political stooges.
The censorship goon squad is full of opportunists and anarchists. They're probably the closest thing to a genuine leftist terrorist group you've brought up, but as far as I know they haven't made an attempt to kill large numbers of people, such as what happened in Virginia.