RI progressives are feeling a fresh burst of energy after seeing Mamdani's stunning upset in the NYC mayoral primary.

The president, who has a history of spewing sometimes vile insults at rivals, has in recent days escalated his attacks against the 33-year-old self-described democratic socialist. Trump has threatened to arrest Mamdani, to deport him and even to take over the country’s largest city if he wins the general election in November.

This column originally appeared in The Politics Brief, our weekly newsletter on the people, power and policies that shape New Yorkers' lives. Sign up to get the full version where you can ask questions,