UFOs are causing pollution in the environment. Thus, aliens are also responsible for global warming. We need to raise this issue. Clearly, aliens don't respect human life.

wut? sources? and btw do we humans respect their life?

There's already a song about this (read lyrics as sung by alien):
https://open.spotify.com/track/...

You're an alien

Aliens create jobs. Unemployment rates in Pandora were close to 100% before Anglo-American-Galactic got there to mine unobtanium and now they have a triving asymmetric warfare industry.
Besides anyone who is smart enough to get a supernova-white collar job on alien companies moves out of this shitty planet, nay, this shitty galaxy anyway, so why bother with this dump?
I've heard alien kids study quantum tunneling in host-victim-chest-nursing schools, and here most of our college graduates can barely make a single bike levitate...
We doomed.

(I actually heard a shithead make an argument that sounded like that to say that we shouldn't care about pollution in India. We really are doomed.)

@Nanos everyone knows that spaceships fly on diesel

Not nice to call the Chinese aliens IMHO