https://www.cbsnews.com/news/what-records-show-about-migrants-sent-to-salvadoran-prison-60-minutes-transcript/
I know users here don't believe they should be here in the first place to which I agree but from an optics perspective this isn't great for Trump and anti immigrant action in the US if leftists are able to effectively weaponize it. Deporting them is one thing (I'm not sure on the mechanics of it but surely it can be done without sending them to El Salvador) but sending them to the prison in El Salvador on accusations of being gang members is something that can be easily exploited and is immoral.
Here's where you're wrong
We NEED the optics of "if you cross illegally you will be hunted down and killed". We NEED to put the fear of God into them. We NEED them to believe that America is a violent and ruthless nation who does NOT respect foreigner's rights.
America is NOT welcoming to people who don't speak our language as a native speaker, people who are not white Anglo-Saxon. It is OUR homeland, not theirs, and they SHOULD leave.