"I'll leave the historical record stuff to the other commenters and just touch on the antisemitism."
Saying that Jewish "race" is no different to anyone else's race in any way that matters or should matter, is not anti-semiticism. It's about as non-prejudiced as you can logically get. PLEASE stop throwing around such nasty ad hominems. I don't know what your issue is but nowhere have I said anything that is remotely anti-semitic and nor will I. You're just nasty in throwing around these accusations. The whole reason we are discussing "Jewishness" is because I pointed out that someone was wrong to say "Jew" when they should have said "Israeli". Just drop these pathetic, offensive ad hominem attacks,
"This is false and easily proven false. There was an genetic analysis of Jews from around the world concluded in 2010 as part of the human genome project and published in Nature under strict peer review. It concluded that Jews around the world are genetically linked and "a race" by the definition people like you care about"
I assume by "people like you", you mean people who have an interest in anthropology? I am roughly familiar with the study you refer to. It tested around 220 people I think? Truly a representative sample. The study actually showed, for what it is worth, as much genetic similarity with non-Jewish ethnic groups (such as Italians) than different Jewish ethnic groups had with each other. At any rate, the study was well-received by people who thought it corroborated elements of the Bible. In contrast to that, we have historical records going back to the Roman times of mass conversions to Judaism - they were actually quite alarmed by the wave of evangelism. With entire nations converting in some cases (the Khazar kingdom in the 8th century converted, again a matter of historical record) it is plain that few if any modern day Jews are actually descendents of any tribes imprisoned by the Pharoahs (the original description someone made). At least any more than any other group that doesn't call itself Jewish is. The study you refer to showed that due to inter-breeding, non-Jewish ethnic groups such as Italians, are as much related as most Jewish ethnic groups. Despite the small number of subjects and the attempts to represent the results in a certain way, I'm actually glad you brought it up as it makes my point to some extent. I don't think the results really show what you think they show.
I am away from my reference books at the moment, but I recommend you read the book by Shlomo Sand that I linked to earlier. As well as being a good collation of the various arguments, the interesting part is the degree to which his well-researched work (he is a professor of history in Tel Aviv) has upset politically motivated believers in the idea of direct descent from the biblical Hebrew tribes. Because there is (as evidenced by opposition to his research) very major political movement to pretend that Jewish people are a "race" when the majority of evidence is against it.
I don't know what motivates you to reject this argument. It is certainly not an anti-semitic argument: the conclusion is that Jewish people are just the same as everyone else.
"Jew is an ethnic group/race/whatever you like to call it. It's not impossible for people of the same ethnic lineage to now have different skin and accents, despite your no doubt expert opinion on the matter."
Well I am expert enough at least not to use ethnicity and race interchangeably as you do. At any rate, I've addressed the above. There are lots of different ethnicities under the umbrella term "Jewish". If you think Jewish is all the same ethnicity then you are showing a staggering ignorance of Jewishness. If you think that a single race cannot include both Jewish and non-Jewish people, then again, you are very ignorant of Jewish populations. I defy you to spot the difference between a Mizrahim Jew and the racially identical Arab. Jew can also refer to a practioner of Judaism of course, but I assume you are discounting those.
"Further, the pyramids were built 4000-5000 years ago, the genetic dispersal of the Jews certainly makes it likely they were all in the same place around then."
This makes no sense. There's no causal connection here.
"This is total horseshit"
Which part? That the Black Jewish people have the best claim to be closest related to the biblical jews? It's my understanding that this is so, but I could be wrong. Or that Black Jews had to fight hard to be accepted into Israel and that they still face prejudice today? That part can be confirmed just by asking any of them, if you care to. And you can check historical records to see how much resistance there was to accepting them as eligible to become Israeli citizens. Despite their practicing Judaism as a people for a very long time.
"First off, thank you for mentioning the "black Jews" (their proper name is Beta Israel btw, show some respect). "
There's nothing disrespectful about calling someone Black, thanks. It's nothing to be ashamed of. And when I said Black Jews (I relish your attempt to try and out-respect the person you are arguing with in order to try and make them look bad). Beta Israel is a bit of a loose term. Properly it should refer to the Ethiopian Jews and their direct descendents. However, it has been somewhat usurped by American Black Jewish people who are definitely converts (of about five generations maximum) and have no direct relationship to the ancient Jews. The Ethiopian Jewish people seem to have the most plausible claim to direct descent to me.
"There is a Y-chromosome marker shared by Cohens throughout the world, black, white, green, spotted, whatever. It uniquely identifies them all as having come from the same paternal relative several thousand years ago"
I think you have fallen for some politically motivated science here. I will need you to link to the actual study, but my first instinct is to ask how many non-Cohens share this marker also, how many "Cohens" do not share the marker, and how many markers are commonly shared by other people sharing the same family surname. Secondly, people with the surname Cohen present only a sub-faction of Jewish people. Does the study say anything about these non-Cohen people? Basically, there are so many suspect things with just the abstract you have presented, that I'm going to have to ask you for a link to the study for this to even be considered as evidence.
"Second of all, Israel hates the poor false victim group you're trying to create so much, that Operation Moses, Operation Sheba, Operation Solomon, etc."
"Israel" is a nation. Not a race. I personally am sick am tired of having to distance Jewish from Israeli in the face of people such as yourself who continually conflate the two. And if pro-Israeli types hate the "poor false victim group", then perhaps you can stop trying to classify any criticism of the Israeli government's foreign policy with anti-semiticism.
"No points for trying to use a minor historical detail to belittle an entire race, either."
Ethnic group, not race. And where have I belittled anyone because of that? My whole position, articulated quite clearly, is that I don't think Jewish is any different to anyone else! How can you simultaneously criticize me for not believing that Jewish is genetically distinct from other people in any relevant way and also claim that I am belittling people because of their race? It does not make sense to me.
"Now have whoever's reading this to you tuck you back in so you can masturbate crying into your Adolph Hitler bedsheets, you're pathetic."
And again, the insults, the ad hominems and the putting of words into other people's mouths. I don't know if there are any Reg guidelines about repeatedly demonizing people you disagree with as racists, but if so, you have gone way beyond them repeatedly. Ad hominems and strawmen are the sign of a weak argument.