Presumption of innocence applies to your trial, not to being apprehended. E.g. the state has to prove that you are guilty.
If I'm a US citizen and I get swept up in an immigration raid, my lawyer calls my wife who brings my US passport and I'm released. A pain in the ass, but not a violation of my civil rights. Now if I get beat up by ICE, or they file a false claim for resisting, then sure, we've got grounds for a case that my rights were violated. But constitutional rights are not a blanket "I can never be arrested if I think I'm innocent"
You cannot be arrested without probable cause. Being arrested in a dragnet immigration raid is just a crystal clear fourth amendment violation. Simple as that.
They simply got a warrant retroactively after they already did it. Released without charge, but they just invented some paperwork afterwards that an anonymous dog had alerted (judge signed it about 12 hours after I was 'not' arrested). No mention on the PC paperwork who the dog was or who the handler was, as far as I know they didn't exist.
So yeah that's nice in theory but in practice they can simply jail you without recording an arrest, then retroactively invent PC. When I ran a federal background check it came up with no arrests, despite the fact I was imprisoned.
The Supreme Court was clear that if your skin is not white, this is probable cause. Also location is important (like being at a car wash) or speaking with an accent.
If I'm a US citizen and I get swept up in an immigration raid, my lawyer calls my wife who brings my US passport and I'm released. A pain in the ass, but not a violation of my civil rights. Now if I get beat up by ICE, or they file a false claim for resisting, then sure, we've got grounds for a case that my rights were violated. But constitutional rights are not a blanket "I can never be arrested if I think I'm innocent"