More than 100 people were arrested in New York on September 24 as multiple protest actions converged around Israeli Prime Minister Benjamin Netanyahu's address to the United Nations General Assembly. The demonstrations — the largest coordinated protest against an Israeli leader on American soil during this phase of the Gaza war — drew a coalition of Jewish anti-war groups, Palestinian solidarity organisations, elected officials, and Democratic Socialists of America members. The day's first major action was a sit-in organised by Jewish Voice for Peace and NYC-DSA that blocked a section of First Avenue near UN headquarters. JVP said more than 400 people participated, including celebrities and politicians. The NYPD confirmed 103 arrests for disorderly conduct; all were released. Organisers said nine of those arrested were elected officials or candidates for office, including Darializa Avila Chevalier, the Democratic nominee for New York's 13th congressional district. Hours later, a separate march organised by the Palestinian Youth Movement and The People's Forum drew thousands more toward UN headquarters. Organisers framed the protests not merely as opposition to Netanyahu but as a direct challenge to US military support infrastructure — NYC-DSA had held a press conference the day before at JFK airport demanding an immediate halt to military and explosive cargo shipments through the facility and greater transparency on prior shipments. Netanyahu used his UNGA address to reject genocide accusations, calling them "the greatest lie of the century" and claiming Israel had taken steps to protect Palestinian civilians. He also attacked New York Mayor Zohran Mamdani directly, calling him "anti-Semitic" and accusing him of spreading lies about Israel, claiming that since Mamdani's election "many Jews no longer feel safe in New York." Mamdani fired back, accusing Netanyahu of repeating "baseless lies meant to sanitise his genocide of Palestinians" and noting the outstanding International Criminal Court arrest warrant against the prime minister. Mamdani had pledged during his campaign to arrest Netanyahu if he came to New York but has since acknowledged he lacks the legal authority to do so. The structural question beneath the protests is whether domestic political costs for US support of Israel are finally materialising in electorally relevant ways. Nine elected officials or candidates sitting in a road and getting arrested is a qualitatively different signal than marches alone — it means political actors now calculate that protest visibility carries more electoral upside than risk. The JFK airport press conference targeting weapons logistics represents an escalation from symbolic protest to specific demands about material infrastructure. What the protests did not produce is any policy mechanism. No legislation was advanced, no shipment was halted, no vote was changed. The UN itself issued no new deadline or enforcement action. The gap between protest scale and policy output remains the defining structural feature of the anti-war movement's challenge: demonstrations can generate political pressure, but without institutional leverage points — congressional votes, executive orders, binding ICC enforcement — the pressure dissipates into the news cycle.