"an arsehole who tries to use their deaths to justify a bunch of gung ho killers in uniform, setting out to even the score by killing black people indiscriminately"

Who would that arsehole be?

What did the arsehole say that indicates any of the things you accuse him of?

You make specious characterizations of what you imagine he meant and try to turn it into fact.
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Instructions on what others should do or think in the form of personal ad hominem attack. A bigoted racial slur:

"SoreJaw is, and always has been, brain-damaged white trash. Ignore it."