Although I see your point, I think the origin point (or at least popularization point) that I guarantee nearly all of us are mentally referencing when we read it supplies that explicit point of reference, at least in my opinion.

There are two things here that are adding to its meaning that remove the ambiguity once you are aware. I suspect your ignorance gives a few things away about your but its ok :)

The raised fist image is "The Battle of Los Angeles" and was used as a cover art for one of the albums for Rage Against the Machine https://en.wikipedia.org/wiki/The_Battle_of_Los_Angeles_(album)

if you lived in the late 1990's, it was very iconic

To me the small red mark on the head is a gunshot/headshot and thus pretty clear.