Reaching new depths of delusion, Mayor Zohran Mamdani’s response to Saturday night’s anti-ICE riot outside a Brooklyn hospital was to bash the feds — and he wasn’t even the worst.

That prize likely goes to Brooklyn City Councilwoman Sandy Nurse, who denounced the NYPD for “coordinating with ICE” in “violation of our sanctuary city laws” simply because cops shut the riot down.

Backtrack: Immigration agents arrested a visa-overstayer with a substantial criminal record; he was injured while resisting, so they took him to Wyckoff Heights Medical Center to get checked.

Word somehow got to the radical anti-ICE network, whose members rushed to the scene and proceeded to block the hospital’s emergency entrances and exits — endangering the lives of others seeking care as the “protesters” tangled violently with the feds, injuring several agents and damaging multiple ICE vehicles.

NYPD command issued a Level 6 mobilization, with cops eventually arresting nine rioters to restore the peace.

Mamdani’s next-day response: Bashing ICE as “cruel and humane.”

Nurse, meanwhile, also denounced the arrest as a “kidnapping.”

Sorry, Sandy: Federal law trumps your fever dreams.

And the public fully supports arresting illegal immigrants who commit fresh crimes in this country.

Rony Yahir Alvarenga Rivera, an illegal migrant who confessed to the savage murder of two Long Island women, is a perfect example of who these anti-ICE flash mobs seek to protect from the feds.

Yet the madness goes all the way to Albany, where Gov. Kathy Hochul and Democratic lawmakers are crafting new bans on local law-enforcement cooperation with ICE.

This isn’t “sanctuary” for people who simply jumped the border; it’s tantamount to nullification of federal law-enforcement authority — and imperils law-abiding citizens at risk from MS-13, Tren de Aragua and other criminal migrant gangs.

Here’s an idea for New York Democrats: Find a way to indulge your compulsion for anti-Trump posturing without endangering New York’s actual citizens.