This is a tragic horrible event because it involves a child being shot and killed, but no--the association with right-leaning or even far-right is unfair because once they became criminals, they were out on a limb, like Scott Roeder and von Brunn.
It's early and we may not have all the facts, but my understanding is they entered the home of a known drug dealer dressed as police. They were there to rob the drug dealer. They are criminals. As much as I have concerns about the Minutemen--these people (two associated with the Minutemen) were engaged in a criminal endeavor that resulted in the death of a child.
I believe the felony murder rule will apply, and they will all get the death penalty.
Left-leaning pundits are going to go to town with this story.