I agree that it doesn't work very well as a slogan yet because people are ignorant as hell. Thinking that "abolish ICE" means that we're gonna stop enforcing immigration would be like thinking that "abolish private prisons" means we're then just gonna release all the convicts out onto the street.
The idea is absolutely necessary, it just needs to be communicated to ignorant voters. When you poll voters on all the major immigration controversies, the majority fall on the Democratic side of damn near every one. People don't want a wall, they don't want random non-criminals forcibly deported, they want a path to citizenship for the DACA kids, they don't want children separated from parents, etc. The majority of the populace wouldn't want ICE if they knew what it meant.
You seem to have no clue what's going on, and that's why you're mad.
ICE operates as it's own agency outside of all the other law enforcement agencies in the Department of Justice. Other law enforcement like the FBI are subject to the DOJ, have checks and balances and follow established procedure. ICE is off on its own in Homeland Security with no meaningful accountability, and it's become a rogue agency.
Even ICE agents are calling for ICE to be disbanded. They say the problems are too severe to just "change the culture", and the only way to change it is to scrap it completely and start over again:
19 ICE agents write letter calling on Homeland Security to abolish the controversial agency
No one really knows what ICE is supposed to be. Politicians love that
“The progressive call to ‘abolish ICE’ is not just a knee-jerk anger at cops,”
said Moira Whelan, a former DHS official who also worked on the first Congressional oversight committee for the agency. “It is also a recognition that they aren’t doing what we built them to do.”