Most in the Middle East are Semites.Muslims, Jews, Christians..from Syria, Iraq, Palestine etc.So why do they say anti-Semite for only jews?

Short answer:

Because that is how it is defined in the dictionary.

To explain:

Definitions of words are usually based on how the words are actually used to convey meaning, not based on a hyper literal method.

Thus, antisemitism only refers to Jew hatred because it is the word that is used to ONLY mean Jew hatred (for 150 years) even though, by definition, semite can refer to all semitic peoples.

As an aside, I noticed your own "answer" to your "question" and the funny thing is that you actually do not address the issue.

The reality is that Jew hatred exists and the word "antisemitism" is used to describe it.

By falsely arguing that the word doesn't apply doesn't make the reality of Jew hatred go away and it has nothing to do with Zionism.

You so called "20 years of research" can't get around that simple fact.

Donno, maybe due to deep superstition & extremism. 

The Jews are the descendants of Judah but they are still Israelites like all the other ten tribes.  The Israelites are the descendants of Shem, one of the three sons of Noah.  The blacks and dark people are the descendants of Ham and the Russians, Germans etc are the descendants of Japhet. Semites are Shemites.

You are right that the word Semite describes some groups that were not Jews. However, in Germany, most of the Semites who were killed were Jewish, so the word Semite came to mean Jews (for those Germans, and for much of the world).

It's really just a trigger word that the Jews use to describe anyone who disagrees with Zionism. The Jews occupying Palestine at the moment are Khazars from Europe who want to expand "Israel" from the Nile to the Euphrates.  They love it when people use the word "Antisemite" because it's lets them know that their brainwashing is working. 

Gen 3:20;Gen 10;Rev 7:9,10;Jer 25:33 jw.org

You  are  correct  all the same  race  just  different  religions

For the same reasons that most people who ask stuff like this are WASPs.

~

Jews have appropriated the "Semite" label because they have always played the victim card. If you read the Bible they always complain of being the victims, hated, despised, "everyone is against us", etc. From day One to this very day. So they desperately needed a "modern" label, and "Semite" was it. 

But of course you are absolutely right, Semites are Arabs too. As much Semites as Jews. 

Because Zionists want people to believe that all Jews are Semitic when in fact most are actually European… And if you are a race rather than a religion then you are more likely to belong to a land… A land that was never theirs to begin with.The original Semitic Jews and Palestinians, Christians and Muslims, lived in peace until the Zionists moved in.