You have been well and truly duped, then.I am not falling into a trap.
It is interesting to note that you distinguish between -Since I am not living in the 19th Century, and I speak contemporary British English, I use the term "anti-semitic" in its ordinary meaning, and not in the meaning which you would like it to have.
"the meaning which I would like it to have" - which is clearly logically correct, and -
"a meaning devised by a religious organisation for their own political gain" - which is clearly logically incorrect,
yet it is the latter you call contemporary British English.
What is British English? Is there a different definition in America or Australia?
What is discrimination called when it is against a jew who is not a semitic person? E.g. a black person.
What is discrimination called when it is against a muslim who is a semitic person?