The slippery slope here is that deciding who is “illegal” may vary wildly depending on who Trump empowers (legit or just some Nazis that want “safe streets”) to decide this. He has had people saying just undocumented, but also people saying anyone that isn’t a full citizen (so anyone here with a Visa/Green Card/work papers/migrant workers/refugees/etc.).
You also know that when the Nazis/KKK folks get to work they are just going to be grabbing people that “look illegal” or that run from them/their mob (because they look dangerous!).
This is also going to have a HUGE impact on food prices when farmers have nobody to pick crops.
I think this has become such a thing because the Right has essentially taken control of current mainstream media, with them constantly doing things like giving Trump (and other fascists) the benefit of the doubt and “both sides” everything.
But the right also has a large and widespread network for their lies/disinformation/conspiracy theories on “independent media” as well. Look at the top 10 podcasts/web shows (on YouTube/etc.), or at the number of just hate “social” networks, and what amount of those push anything outside of Trump-land talking points?