Why antisemitism is wrong (logically and rationally not just morally)

When I'm watching a video on some political topic then I scroll down to the comments I often see very anti-Semitic comments so I decided that I would try to refute their claims. I wanted to know what exactly this group of people believe and why so I went to a profile called "The Goyim Know" to see his comments and memes to see what I could glean from it. One of the claims put forward is that the Jews are behind all of the leftist ideologies like communism or cultural Marxism. I think this can be explained by the fact that Jews as a group have a very high average IQ which means any philosophy or way of thinking is probably going to have a disproportionate amount of intellectuals that are Jewish. If you look at the intellectuals who oppose communism a disproportionate number of them are also Jewish. And I know there's the meme of controlled opposition but really you could say that about any group and no one ever has enough evidence of this to satisfy my curiosity. There's also the idea that the Holocaust was a hoax. Now when it comes to the death toll I have heard convincing arguments that the death tolls have been greatly exaggerated. And there's a huge difference between saying the Holocaust didn't happen and saying that the numbers have been exaggerated. What I believe happened is that innocent Jews as well as homosexuals and the disabled were rounded up and killed and then later the death tolls were exaggerated, by how much I'm not sure and I don't know of anyone knowledgeable enough to give a definitive answer. But the simple answer is that if even one innocent person is killed because of their ethnicity it's one too many and the principle still stands. I've also seen the meme that Israel did 911 and it's an idea that I've come across before I just have never had a reason to believe it. I think this could be a case of someone wanting something to be true. I say that because if it were true there would be no way of knowing. What I believe about 911 is probably controversial to many but I think the government allowed it to happen because they have ways of preventing airplanes from being hijacked and ways of preventing hijacked airplanes from running into buildings in New York. I just don't think there was some kind of Jewish mastermind or Jewish conspiracy behind it. There's this other weird thing that I saw them doing where they look into someone that is politically connected or influential and then find someone that they know that is Jewish and then say see this is their handler. I just think that's so ridiculous I mean I could say that about any group. I could say well since Obama had ties to David Duke that means the world is secretly run by the KKK. Now one thing I do agree with is that we shouldn't be sending money to Israel but I don't think we should be sending money or resources to any other country because we have so much debt already. This particular profile that I looked at called "The Goyim Know" did have a comment about the holocaust and says his information is unbiased because it's from a Jew and then he says this person does good work or something to that effect I don't remember the exact words. I bring this up because it shows that obviously this particular person wouldn't be in favor of something as extreme as a genocide but then it's difficult to say exactly what their beliefs are. The posting of caricatures of Jews implies that they would be in favor of a genocide. I haven't heard any of these people say they would be in favor of it. But in the past that's what people used caricatures for, to demonize the other. I know there are a lot of corrupt and powerful people that are Jewish and that they have a strong in group preference but I fail to see how that makes Jews any different from any other group of people. In any group of people you have the corrupt, the evil, and psychopaths but you also have the sincere, the good, and the compassionate. That is the reason why we need to treat everyone as an individual and not part of a group. The smallest minority is the minority of one.