There is a legal standard for what constitutes a threat. And threatening someone with death is illegal. Spencer is not in jail, he is not even under investigation. Unless you have some actual evidence to the contrary, I have to conclude that Spencer did not, in fact, threaten you or anyone else with death.
I understand the concept of prioritizing what you care about. But Spencer still deserves every legal protection that you do.
The ACLU wasn't wrong. Either we are a civil society which offers its citizens equal protection under the law, or we are not. If we are, then Spencer's assailant deserves jail time, and his actions should be condemned by everyone interested in maintaining civility and the rule of law.
It seems, sadly, that many who should know better are no longer interested in either of those things.