I tend to agree with Fantine about karma. I don't think karma would be against the angels of justice. What justice looks like when the merciful will receive mercy because they were merciful, is a nuance that would make karma incongruent with any power coming from a hypocritical vengeance. We all reason on a fundamental dichotomy of Good/bad. Those of sound reasoning would all agree that stopping someone who is doing harm to others does not qualify as vendetta, but as stopping the harm and the suffering it causes. That's also what compassion does.
The issue of the OP is therefore traversing the semantics that occur in the dichotomies of Good/bad, Light/dark. And there are no differentiating qualifications for words claiming to be the light, since they could just as well be propaganda posing as the light. A sound reasoning doesn't conclude that lies are harmless, and that the heart is not troubled with being misguided. In other words, our political feelings are not always legitimate in the sense that they can be manifested through belief in false information that of itself isn’t real to begin with.
For example, how do we know the FBI so called 'rampage' isn't the karma? The presentation is therefore a spin (a particular interpretation). And because it is supporting a personal bias it is not the Light, it is propaganda. The semantics make it clear that "karma" in the context of the op is an insinuation because it omits the issue of whether the FBI has a just reason for any actions the op is referring to. It therefore insinuates that the FBI is unjust in those actions and their intentions. That's an ad hominem logical fallacy. Moreover, since the common interest in justice is that the damage that the harm done in the world be minimized, any suggestion that there will be pay-back for what is happening to "Trump", qualifies as a personal vendetta, not karma.