Chillul Hashem is applicable to a trait or action exhibited only by a large number of Jews. Chillul Hashem as most Jews view it, is more accurately a manifestation of Anti-Semitism.
If a Muslim or Christian cuts me off, or is rude to me, I don’t attribute his actions to his Christianity or Muslimity, I blame the person. I don’t believe the Chinese race lacks patience even though a Chinese waiter once pressured me to finish my meal.
To blame Jews as a whole for an action committed by one single Jew is nothing other than Anti-Semitism. Now if an entire Jewish organization got up and said that all Jews should cheat on their taxes, that would be a chillul hashem.
p.s. I don’t really believe this, but why am I wrong?