How about the ego of the Federation to have all ships registries and names printed on the hull in English/Arabic Numerals. Those aren't even the only systems on Earth, and we expect the rest of our galaxy to comply?
I do like that modern sci-fi discards the antiquated term "earthling" and instead calls homo sapiens "Terrans". The balls on our race to think we've got the only sentient race, sun, moon, star system, etc in the galaxy!
We're Terrans. We live on Terra. In the Sol system. We have a moon, Luna. We are in the Milky Way Galaxy.