So when I see people talking about John on the topic of killing, they seem convinced that John has not killed anyone yet in the webcomic. However, during the raid on Wellston, and when John attempts to perform suicide by cop, personally I remember him copying Blake's ability, and shooting right through some of those cops's heads. Admittedly the narrative doesn't really mention what happened as being kills (though in the scene with John and Seraphina after this it's not as if the details are mentioned.)

When I read the scene originally, I interpreted it as John killing cops in revenge for the state's murder of his dad, as well as his generally depressive episode around then. Am I interpreting it wrong? Is there no confirmation on this topic? Did John kill multiple cops without much narrative consequence?