How to Spot Antisemitism in Someone's Posts

Most antisemitism online does not arrive in a swastika. It arrives as a question that already knows its answer - who owns the banks, who runs the studios, who really started the war - phrased just innocently enough that the person can shrug and say they were only asking. That deniability is the whole design. The slur gets you reported; the wink survives.

Which makes it genuinely hard to read from a single post. You are trying to tell an ugly coincidence from a habit, a clumsy phrase from a worldview. This guide is about how to do that fairly: what the recurring tropes actually are, how to weigh context instead of pouncing on a word, and where the line sits between hard politics and hatred of a people.

Why antisemitism hides in plain sight

Antisemitism has a longer back catalogue than almost any other hatred, and that history is exactly what lets it travel undercover. The tropes are centuries old, so people repeat them without always knowing where they came from - the shadowy financier, the disloyal insider, the puppet-master pulling strings behind every headline. Strip out the word "Jew" and the shape stays, which is why "globalists" or "who controls the media" can carry the old cargo without ever spelling it out.

Online hate is not a fringe experience, either. According to the ADL, 56% of Americans say they have experienced online hate or harassment in their lifetime (ADL, 2024). Some of what you are learning to read is aimed at other people; some of it is being tried out on you.

What it actually looks like in a feed

It runs on a spectrum, and it helps to know the whole range before you judge any one post.

• The blunt end. Slurs, Holocaust denial or "the numbers don't add up," open calls for harm, cartoons with the old hook-nosed caricature. Rare on the big platforms because it gets removed, but it still surfaces, and it leaves no room for a charitable reading.
• The conspiracy layer. The real workhorse. Claims that a small hidden group controls banking, media, governments or "the narrative"; that world events are staged by financiers; the "Great Replacement" framing that casts Jewish people as engineers of demographic change. The names get swapped for euphemisms, but the story is the same.
• The coded layer. Numbers like 88 or 1488, the triple parenthesis "echo" placed around someone's name, recycled memes and emoji that read as harmless to outsiders and as a handshake to insiders.
• The "just joking" layer. Irony as cover - a meme, a "we all know who" gag, a reply that plays a stereotype for laughs. One is deniable. A steady diet of them is a position.

Worth saying plainly: criticizing a government, including Israel's, is politics, and plenty of Jewish people do it too. It becomes antisemitism when the target quietly shifts from a policy to Jews as a people - dual-loyalty accusations, "you can't criticize them," holding every Jewish person answerable for a state. The move from argument to essence is the thing to watch.

How to spot antisemitism in someone's posts

The single most useful habit is to stop reading posts as isolated events. A worldview shows up as repetition. The same trope phrased three different ways across a year, the same accounts quoted approvingly, the same replies egging it on - that is signal. A lone weird line, surrounded by nothing like it, usually is not.

Then read the company someone keeps. People are careful in their own posts and careless in the replies, so scroll the comments they leave and the accounts they boost. And read across platforms, because the mask that stays on for a polished LinkedIn slips on a burner-feeling X account. When a coded phrase on one site lines up with a blunter version somewhere else, the deniability is gone.

A reading checklist

1. Start with the plain meaning of a post, then ask who else uses the same phrase and what they mean by it.
2. Learn the recurring tropes - conspiracy claims about who controls money and media, dual-loyalty digs, Holocaust denial or mockery.
3. Watch for coded numbers, recycled symbols and the triple-parenthesis 'echo' that travel in extremist circles.
4. Read the replies and reposts, not just the original, because the quiet part often gets said in the comments.
5. Check whether it shows up once or runs through months of the timeline across X, TikTok, Instagram, Facebook and LinkedIn.
6. Keep the actual post as evidence and let your own judgement, in context, make the final call.

The honest limits

Be straight about what a read like this can and cannot do. It sees public posts only - locked accounts, private groups and DMs are out of reach - and it only has something to work with if the person actually posts. A quiet timeline gives you little either way.

And context is where automated flagging struggles most. Reclaimed language, someone quoting hate in order to condemn it, dry sarcasm, an academic thread about antisemitism itself - all of it can trip a filter that reads words faster than it reads intent. That is exactly why a flag should come with the post attached: it is a reason to look, not a verdict handed down. You read it in context and decide. A clean result means nothing in the public posts stood out - not that someone has been cleared, and not that they are safe.

Used that way, a read is not about catching people out. It is about not being the last to know what a person has been saying in the open the whole time.