We could try comparing them to a more advanced society, because that would seem to be a more appropriate comparison, anyway.
Ohh ok lets compare them to america, waging a ware every 20 years, exploiting imigrant labure ......
Then, let's go there. Note that the USA didn't start any
of the wars we are accused of "waging" in the past century (with the possible exception of the current ones). In fact, we only got involved in any of them at the specific request of the parties involved (the Allies, Korea, South Vietnam, etc.), or when somebody brought us into it by attacking us directly (Pearl Harbor).
So, if you're going to compare advanced aliens to the USA, then all we have to fear from alien invaders is retaliation if we start a conflict.
And, "exploiting immigrant labor" means "paying them small amounts of money (but still more money than they would have made back home) when they voluntarily come to the USA to work."
So, if you're going to compare advanced aliens to the USA, then all you have to complain about is not getting paid as much as aliens (but still more than you would make here) when you immigrate to their lands.
If these are your real concerns with advanced alien "invaders," then I think your comparisons between them and 19th century imperialists is petty.
They're just as free to move about the country as anybody else in the USA. I know a lot of Native Americans of several different tribes who don't live on reservations, and hold jobs that are just as good as anybody else's jobs.
We would be just as free as them roaming the earth as long as we follow their rules.
Native Americans currently enjoy all
the freedoms I enjoy as a white man living in the United States. I took no part in making the rules that both they and I have to live by, and neither did any white person that I know personally, so it's totally ridiculous for you to characterize "them" as having to follow "our" rules.
-Bluejay (a.k.a. Mantis, Thylacosmilus)
Darwin loves you.