The number of online trolls and shills is astounding, they are not always obvious. They sometimes have clever tactics.
Some markers on how to spot them:
-They spread despair, such as you can never stop them, there is nothing you can do etc.. (https://conspiracies.win/u/Mrexreturns/ comes to mind).
-They distract from obviously important subjects by trivial matters, (some guy was posting "dog people" conspiracy just couple of days, in another, Mrexreturns says the vaccines are not important, they are fake for the most part, we need to focus on the "cannibal machine infusion" instead which we can never stop and kill ourselves)
-In some cases they are needlessly aggressive, this tactic will move people away from discussion and from any website about this topic. While yes people have frustrations, I noticed some of them are just aggressive for the sake of being aggressive. I even played along with some of them to see if they have any points but they do not. They just want to spout verbal assault.
-They absolutely hate Hitler and the Palestinians. You may or may not agree with Hitler's approach or the results of what he undertook, maybe you think he was working for them, but Hitler is absolutely a red line for shills. Additionally they will never acknowledge the Palestinian, even though anyone who knows anything will at least support those on the front lines against his enemies even though he might hate them. But those two topics are an absolute no no to the hasbara troll.
Also, it only take for example for one Hasbara troll working only 2 hours a day to create multiple accounts and completely ruin a forum or a website. Of course, many normal people will have one or more of the above, but these indicators help spot disinformation.
Don't forget creating division via bright red lines in the sand to clearly differentiate "us" and "them" through a cognitively easy litmus test.