Is it time to start calling out bad cyclists?

Etiquette Question:

What do you do if you come up to the ASL and the cyclists already there look as though they'll be pretty slow?

I usually neatly file behind as I think it's a bit rude to just push past. But the other day it seemed as though every light had a dutch town bike.

Am I right, or just being over sensitive?

Are you sure it wasn't the same Dutch town bike and you're just being slow?