In a society where democratic tools no longer function effectively—due to capture by concentrated powers—people often feel powerless to address systemic harms. I can understand how the only power an individual can have in that situation is something like murder.. but it’s making many assumptions.. like this person really was working as an individual from moral grounds in the interests of majority of society.. and that we can trust this moral judgement to and individual, as in today it might be an arguably utilitarian good but tomorrow it might be a cultural or religious thing.. will this action really would have any positive affect on healthcare results for many people, or change any behaviors of people in power apart from getting more security guards..
I think most people are confusing captured democracy for the fact that the actual voting population is split on issues once people step outside their bubble.