In regards to woman's son's death, this is entirely victim blaming. What judgement did she make that destroyed someone's life? What did she do that warranted her son being killed?
Realistically, I don't believe Judges will ever face real consequences and what's more probable is the system adapting towards lesser punishing modals. Also providing the ability to expunge records completely and universal income for criminals unable to obtain a job after their release. The punishment for a crime shouldn't be unemployment/homelessness for life.
There are other professions such as in the medical field that can really damage a persons life as well. Not everyone has the money to sue or even win a malpractice case and lawyers won't always take a victim's case as pro bono. Persons severely wronged, deeply need a way to feel some remedy and or we will continue to see vengeance outbursts. Especially from persons that see others being remedied for what they believe was much lesser in comparison to what happened in their own situation and where they constantly think the only reason they're not obtaining a remedy is from grossly unfairer situations they're in because of the wrong that happened in the past.
I think the foregoing is similar to why there are so many school shooters in USA. People need a remedy from being wronged and sadly all we have is a remedy system for the fairly well off. That also caters once in a while to someone that isn't so well off.
People who kill others in situations like these rarely come to their decision based on fact and rationality. As much as we need more accountability, putting government officials - or anyone else - in a potentially life-threatening situation at a time where armed terrorists regularly make death threats based on baseless conspiracies is not a good way to do that.
Judicial elections are an option for accountability, setting up judges to be gunned down is not.
If you make a shitty judgement and destroy someone's life and you end up getting targeted as a result, then maybe you shouldn't have made an unjust judgment and destroyed someone's life. Your judgements should have weight, and shouldn't be made lightly.
Maybe if there was more personal accountability in our justice system then the American judicial system would stop focusing so much on prison profitability and punishment, and would start focusing more on positive concepts like rehabilitation and social support structures?