I would be tempted to say "Let Mamdani run things as he likes and watch everything fall apart." But that would imply that New York City has a completely closed system that would never get bailed out by the state or federal government. Since it is not, leftists can never truly be allowed to live with the consequences of their retarded choices, so Mamdani running wild would not give us the proper experiment if he were to have his way 100%.