So far historically it was "they're not Christians", then it was "wrong location" (cause they wanted the land/resources), then it was "they're not the right race", then it was "wrong economic system", and now it's "wrong culture"; what's next do you think?
EDIT: By justifiable I don't mean it's actually justifiable, I mean most people will consider it justifiable.
To protect the treats
I'm not kidding at all
The open embrace of imperial violence to maintain one's own personal lifestyle will be an increasingly popular position as material conditions deteriorate: Treatlerism
I'd argue this is the third tenet of the evergreen "life, liberty, and 'the pursuit of happiness'"
The pursuit of my happiness even at the cost of your life and liberty
Basically the justification for bombing Yemen, “they’re threatening the sea lanes and international shipping!!”
Nevermind that they are doing a targeted embargo to stop a literal genocide, the specter of treat stoppage is used as justification for violence in response.
This one is also my guess. Water and viable farmland.
"They make the nation weak" will be for targeting internal minorities, and we'll use the regular "sorry, wrong race" when fighting Russia and China. In other words, same as always.
"Lifeboat Ethics" probably wont be in full swing until the late 2030s, and the West definitely has a few genocides it can do before then...
Probably "FAFO" "only 60% of them voted for Democrats" "I didn't see them care at all when The Ukranian Genocide was happening in 2022"
"We did the last one and things ended up fine for us."
They won't need a reason.
I vote for genocide on all the liberals who posted trolley memes in the last few months.
if a bird flu epidemic coincides with the mass deportations it might happen extremely soon, sorry the vaccines have to go to real amerikkkans and also you must be deported during an epidemic just how things are
“for science!” Is the justification for desecrating Hawaiian sacred sites in Hawaii
i think that there's still plenty of mileage left on the good old fashioned "they're terrorists" excuse that worked this time around.
In order of most likely/immidiate:
Invade Mexico to secure the border and fight the cartel, in reality just an excuse to round up everyone who doesn't speak English in a Guantanamo 2.0 right on the border while doing the same on random Mexican schools and bars/markets "owned by the cartel" or some shit.
Next if somehow US goes to war with China you can absolutely expect Asian concentration camps.
Then inevitably I don't see the US surviving climate change without doing the whole "cleaning the cities" first. At first it will be homeless and drug addicts. Then it will be LGBTQ and in the end it will be camps for climate migrants between states e.g Florida.