You're arguing that Antfia or BLM ranks higher than the SPLC?
I'll grant you that the SPLC lacks in the direct application of violence.
But the are huge in the application of CHARACTER ASSASINATION or economic damage, or "cancel culture".
Very few people have to worry about being killed by a lefty mob, on a regular basis.
I've only felt personally endangered by lefty mobs, a few times in my life.
But the danger of lefties using their postions in corportations or government offices, to fire people, or deny contracts, or something like that, to people based on politics, ,that is the type of thing that every American has to live with every day.