I'd add on that most on the left have also studied enough to know that people love martyrs and that very few deaths of public figures would substantially change our society.
I'd describe myself as a raging leftist, and I can count on one hand the people whose assassination I think would result in beneficial change for our society even with any blowback of support and counter assassinations. MTG has never been close to that level.
Dismantling systems of oppression and changing the way people think is far more effective.