Jokes about each faction:

A Caldari officer and an Amarrian priest book a passage on a slave transport ship through low sec space.
After five jumps of no trouble whatsoever, pirates web and scram the ship. The captain bails and the ship's on fire and the Caldari and Amarrian rush to grab all their shit.
"WHAT ABOUT THE SLAVES??" The Priest asks.
"FUCK THE SLAVES!!!" The Caldari yells.
The Amarrian goes "...Do you think we'll have time to?"

If I hide wrecks from overview, can I still see Minmatar ships ?

How many Caldari pilots does it take to change a lightbulb?
One. They are efficient and lack a sense of humor.

*There isn't even one decent joke about the Gallente*