Carnivores: Dinosaur Hunter

One day, descendants of the dinosaurs that invented space travel and set off to explore the universe in the late Cretaceous will come back to survey the planet they evolved on and to check to see how the hairies have done since they left the primitive beasts 65 million years ago.
"Avert your eyes crewmates! They've ruined the birth planet. Look at it! It is sick and dying yet still they rape and pillage it." "We should destroy them with our space dino lasers and wipe their fragile little existence off of the face of the birth world. Give me that order sir and it will be done without a moments hesitation" "Belay that order! Let them revel in their own filth, dirt and dust until they suffocate themselves. Let the last remaining hairy ones look each other in the eye under a scorched sky and realise that they have doomed themselves into extinction. They won't last another century I'd wager.""Sir! Our scans have shown that they... I can't believe it sir! Our scans of their limited technology shows that have desecrated the remains of our ancestors and recreated them in virtual play pens where the hairy ones hunt down our naked ancestors. They depict our glorious lineage as nothing but featherless savages who exist only to endlessly fight each other in desert and jungle type localities.""Why would they simulate the hunting of our poor defenceless brethren? What perverted race creates such sycophantic fantasies? Imagine if they ever created technology that allowed them to escape this hell they have created for themselves? This seals their fate. Ready the space dino laser!"

"One last question sir! Why do we call ourselves dinosaurs? That would make no sense?"

"FIRE!"