So what would happen if various scifi races or civilisations were to form their own interstellar racist alliances?
EDL
Endor Defence League
Bloody human imperialists come over here. Build a sodding space station with no planning permission. Ruin our lovely forests with their pet AT ATs and their boy racer scouts on speeder bikes. And frankly that Darth Vader is a child abusing nonce who should be on the sex offenders register!
C18 (Clear Away Harkonen)
Bloody Harkonen's flying here through their jump gates. Pinching our spice, drinking our recycled urine and snorting our spice!